Is John’s Gospel the Only Evangelistic Book in the Bible?

Summary

Podcast Summary: Grace in Focus

Episode Title: Is John’s Gospel the Only Evangelistic Book in the Bible?
Date: February 23, 2026
Hosts: Bob Wilkin & Ken Yates (Grace Evangelical Society)

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Overview

This episode delves into a distinctive question: Is the Gospel of John the only book in the Bible written with an explicit evangelistic motive? Bob Wilkin and Ken Yates explore the intended audience and purpose of various New Testament books, emphasizing John’s unique, direct message to unbelievers regarding how they can obtain eternal life. The discussion raises important distinctions between evangelistic and discipleship content in the Scriptures and underlines Free Grace Theology’s focus on John’s Gospel for assurance and clarity in evangelism.

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Key Discussion Points & Insights

1. The Unique Audience and Purpose of John’s Gospel

• Contextualizing New Testament Writings

  • Most NT books addressed to churches or individuals for teaching, exhortation, or encouragement, rather than evangelism.
    • Examples:
      • Galatians to the churches in Galatia, Romans to many house churches in Rome, Philemon to an individual. (01:33)
  • Some are “general epistles” aimed at multiple congregations (e.g., Hebrews, 1 & 2 Peter, 1 John).
  • Revelation is apocalyptic and focused on the end times, not explicit evangelism. (02:57)

• John’s Gospel: Evangelistic Intent

  • John 20:30-31 is cited as a clear purpose statement:

    “But these are written that you may believe that Jesus is the Christ, the Son of God, and that believing you may have life in his name.” (03:56)

  • The audience is identified as those who do not yet believe, and by extension, do not yet have eternal life.
    • “Isn't it pretty clear, therefore, the people he's writing to do not yet believe, and they do not yet have life in his name?” – Ken Yates, 04:18
  • Internal evidence suggests he may have written primarily to Jews of the Diaspora, explaining Hebrew words for non-Hebrew speakers. (05:27)

2. Common Objections to the Evangelistic Nature of John

• Objection: John 20:31 says “life,” not “everlasting life.”

  • Ken argues the context and usage throughout John’s Gospel demonstrate “life” consistently means “everlasting life.”
    • “There's lots of places in John's gospel where he uses life without mentioning everlasting. And it's obvious he means it.” – Ken Yates, 07:06
  • John’s references: John 5:20, John 14:6, John 11:25 – all show “life” as “everlasting life.” (07:06)

• Objection: John for Discipleship, not just Evangelism

  • Some posit John’s Gospel serves both, but the purpose statement (“that you may believe”) targets unbelievers.
    • “God wants them to have life and life more abundantly, but you got to believe to get the life. And that's what the verse is talking about.” – Ken Yates, 08:34

3. Are Other Books Evangelistic? Comparing to John

• Examples:
  • Esther: No mention of God; not a clear evangelistic book.
    • “How many times does the name of God appear in Esther?”
      “None.” – Ken & Bob, 08:56
    • “You're not going to come to faith reading Esther.” – Ken Yates, 09:01
  • Song of Solomon, Philemon, 2 & 3 John: Not framed to bring readers to faith. (09:46)
• Gospels of Matthew, Mark, Luke (Synoptics):
  • No explicit purpose statements or clear evangelistic invitations as found in John.
    • “Read the Gospel of Mark. There's no clear: Here's a gospel representation of believing in Jesus for eternal life.” – Bob Wilkin, 10:14
  • Ephesians 2:8-9— often used in evangelism—does not mention Jesus directly and is written to the already-saved. (10:27)

4. John’s Gospel as the Primary Tool for Evangelism

• Logical and Textual Reasons

  • John is structurally and thematically distinct; about 92% of its material is unique.
    • “John's completely different. I forgot what it was like. 92% of the material in John is unique...” – Bob Wilkin, 11:33
  • Whereas other books are designed to teach believers to please God, John’s Gospel aims at leading people to initial saving faith.
    • “Every book except the Gospel of John is designed to get people to please God.” – Ken Yates, 11:19
    • “The ultimate way we please God, the initial way we please God is by believing in His Son.” – Ken Yates, 12:02

• Faith Alone in Christ for Eternal Life

  • “The reason why most people flee the Gospel of John is because they don't believe that simply by faith in Jesus, a person has everlasting life.” – Ken Yates, 12:32
  • Other requirements (commitment, repentance, discipleship, perseverance) are added by many, leading them to emphasize other scriptures for evangelism, but John’s Gospel remains the most direct. (12:39)

5. Practical Application and Free Grace Theology

• John’s Gospel as Evangelistic Curriculum

  • The hosts reiterate the value of using John’s Gospel as the foundation in evangelism—“using a hammer as a hammer,” rather than misapplying other books.
    • “We're using a hammer as a hammer. We're not using a saw to try to drive in a nail.” – Ken Yates, 12:53

• Clarification

  • While people may come to faith from reading other books/verses, the message leading to faith must align with John’s Gospel.
  • Assurance and clarity in evangelism depend on sticking with John for its explicit, intended purpose.

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Notable Quotes & Memorable Moments

• On John’s unique evangelistic purpose:

  “There's one book that's specifically written to unbelievers, and that book is John's Gospel.”
  – Ken Yates, 03:33

• On objections to 'everlasting life':

  “There's lots of places in John's gospel where he uses life without mentioning everlasting. And it's obvious he means it.”
  – Ken Yates, 07:06

• On Esther and other books not being evangelistic:

  “You're not going to come to faith reading Esther.”
  – Ken Yates, 09:01

• On John's Gospel compared to the Synoptics:

  “John’s completely different. 92% of the material in John is unique to the Gospel of John.”
  – Bob Wilkin, 11:33

• On the sufficiency of faith in Christ:

  “The reason why most people flee the Gospel of John is because they don't believe that simply by faith in Jesus, a person has everlasting life.”
  – Ken Yates, 12:32

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Key Timestamps

• Main topic introduction: 00:49–01:33
• Distinct audience of John’s Gospel: 03:19–04:32
• Purpose statement (John 20:30-31): 03:56
• Audience and context analysis: 04:32–05:50
• Objections to John's purpose statement: 07:06–08:34
• Other books and their purposes: 08:56–10:27
• Synoptic Gospels comparison: 10:14–11:33
• Free Grace Theology and practical use: 12:39–13:01

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Conclusion

Bob Wilkin and Ken Yates make a compelling case that John’s Gospel stands alone in the New Testament as a book with an explicit evangelistic purpose: leading unbelievers to faith in Christ for everlasting life. While other NT writings are rich in doctrine and grow believers in faith and practice, only John directly addresses the “how” of being saved. The episode advocates using John as the foundation for evangelism—clear, direct, and written with that particular aim in mind.

Transcript

[Host]

The following is a listener supported ministry from the Grace Evangelical Society. Is John's Gospel the only book in the Bible with an evangelistic purpose? And why is this an important question? Thank you friends for joining us today. This is Grace in Focus, the radio broadcast and podcast ministry of the Grace Evangelical Society. Find [e-mail] we would also love you to stop by our YouTube channel. It is YouTube Grace Evangelical Society. Get registered for our 2026 National Annual Conference, May 18th through the 21st. Detailsaithalone.org now with today's question and answer discussion, here are Bob Wilkin and Ken Yates.

[Bob Wilkin]

We are discussing the plenary sessions or the main sessions of our upcoming national conference which we're going to have, Lord willing, in May. We're just going through these, hopefully to whet the appetite of people who might be on the fence about coming. And when you hear some of these topics, you might want to say, man, I'd like to hear more about this. The one we're going to discuss in this episode is the Gospel of John, the only evangelistic book in the Bible. What do you mean by that? Is it's the only book that was written to tell the unbeliever or for the purpose of telling the unbeliever how they could receive eternal life or you might say, be saved from the lake of fire.

[Ken Yates]

Okay, so let's talk for a moment about the New Testament. In the New Testament, we know, right, Ken, that many of the books were written to groups of people, churches, right? So like for example, Galatians was written to the churches in the region called Galatia or South Galatia. Romans was written to at least 16 different congregations mentioned in Romans chapter 16 that were in Rome. First and second Thessalonians was written to churches in Thessalonica, right? Ephesians to the church or churches in Ephesus. But we also have letters to individuals,

[Bob Wilkin]

right, Like Philemon, Timothy, first and second

[Ken Yates]

Timothy, Titus, Titus and some of the epistles are called general epistles because they're not written to specific churches, but they're written more generally to groups of churches. For example, Hebrews or first and second Peter are general epistles or First John is a general epistle. Then you have a book like Revelation, which is apocalyptic and is telling us about the end times, particularly about the tribulation and the millennium and then the new heaven and the new earth. And the Gospels, the Synoptic Gospels, Matthew, Mark and Luke. We're not specifically told who their readers are. Right.

[Bob Wilkin]

Well, in Luke we got Theophilus Right.

[Ken Yates]

Okay, so Theophilus, assuming it was written just particularly for him, then that would be an individual. Although I think we can assume that Luke intended this book also to go out to churches.

[Bob Wilkin]

Sure, along with the Book of Acts.

[Ken Yates]

But you wrote a commentary on Mark. Does Mark give any indication who his intended readers are?

[Bob Wilkin]

He sure doesn't name them. That's true.

[Ken Yates]

And it's probably fair to say, say that Matthew and Mark were written to be distributed in churches. That's what we have in terms of our books. But there's one book that's not written to individuals and it's not written to churches, specific churches, or to groups of churches. There's one book that's specifically written to unbelievers, and that book is John's Gospel. Look at John 20, if you would, 30 and 31, and see what John says his purpose is in writing the book.

[Bob Wilkin]

In John 20, 30, 31, John says this. And truly Jesus did many other signs in the presence of his disciples which are not written in this book. But these are written that you may believe that Jesus is the Christ, the Son of God, and that believing you may have life in his name. So there's the purpose of the book.

[Ken Yates]

Right. And I would call that participle believing. I would say by believing, by this manner, you would have life in his name. Well, isn't it pretty clear, therefore, the people he's writing to do not yet believe, and they do not yet have life in his name.

[Bob Wilkin]

Right.

[Ken Yates]

Who is he writing to? Well, I've seen some suggestions, and one of the suggestions was you'll remember that when Peter wants to get into the inner court, when Jesus is going through these various trials, John is the one that gets him in. Because John's family was well connected within the Jewish community. They had a fishing business. His dad was very successful. And it's been suggested that John was writing to a group of Jewish people, probably like a family or a group of families. And they may well not be in Palestine, they may be outside somewhere else. Because he explains some Hebrew words that normally you wouldn't explain to Jews who spoke Hebrew, but you would to Hellenistic Jews who only spoke Greek.

[Bob Wilkin]

Yeah, so what Bob is talking about here is that in the first century you had what was called the Diaspora, where many, many, many, many Jews did not live in what we call Israel. They lived in Ephesus, they lived in Asia Minor, they lived all over the place, all over the Roman Empire. And so John is writing his book to someone like that.

[Ken Yates]

Now, it's possible that he's writing to Jewish people who live in Israel and some family or group. But what is not possible is that he's writing to believers because he says that you may believe that Jesus is the Christ Son of God, and that by believing you may have life in his name. So when he wrote the book, they were not yet believers. They were not yet born again. Now, someone reading the Gospel of John could come to faith in John, chapter one, right?

[Bob Wilkin]

So by the time they got to

[Ken Yates]

get to the purpose statement, they're like, oh, oh, I'm already a believer. That's great. But the truth is, that's why it was written.

[Host]

It's coming. It'll be here before you know it. What am I talking about? The Grace Evangelical Society's National Conference, 2026, May 18th through the 21st at Camp Kop. Absolutely beautiful campground in North Texas, right on the lake with lots of recreation, great food, a great place to stay, wonderful fellowship and wonderful free Grace Bible teaching. Information and online registration now at faithalone.org events first timers waive registration fees. Faithalone.org events now, there are some objections.

[Ken Yates]

One of the objections I've heard to John 20:31 is it doesn't say everlasting life. Some people say that you may have life in his name, and they say if he meant everlasting life, he would have said it. Well, I find that hard to believe because there's lots of places in John's gospel where he uses life without mentioning everlasting. And it's obvious he means it. For example, he Sundays in John 5:20, where he who hears my word and believes and sent me has everlasting life, shall not come into judgment, but has passed from death into life. Well, obviously he means everlasting life there. And in a book where he's talked about everlasting life all the way through the book, he's obviously talking about life. In 2031, I did an article. You can look at it. I think there's something like 20 references of the word life by itself in John's Gospel where it clearly refers to everlasting life. In fact, when Jesus says, I am the way, the truth and the life, the life, or I am the resurrection and the life, he means I am everlasting life. In fact, in first John, John calls him everlasting life in chapter 1, verses 1 4, and in 5:21. So John 20:31 is some people will say, well, no, what that means is that you may have life more abundantly.

[Bob Wilkin]

When you hear people say that, what's Your experience, What kind of life are they talking?

[Ken Yates]

Some people I've heard say it's both evangelistic and discipleship.

[Bob Wilkin]

Right.

[Ken Yates]

Of course, the problem is that you may believe. So if they're unbelievers, sure, God wants them to have life and life more abundantly, but you got to believe to get the life. And that's what the verse is talking about. And by the way, have you ever read, for example, Esther? How many times does the name of God appear in Esther?

[Bob Wilkin]

None.

[Ken Yates]

None. You think someone could be born again reading the Book of Esther?

[Bob Wilkin]

I wouldn't think so.

[Ken Yates]

I've heard some pretty fanciful explanations of Esther. You know, and they somehow find Jesus in Esther and they find Satan in Esther, and they've got, you know, all kinds of things in Esther. But you're not going to come to faith reading Esther. Right.

[Bob Wilkin]

I'm reminded of Spurgeon and how he used the Old Testament. No matter what he was talking about the Old Testament, it wound up talking about the cross.

[Ken Yates]

Yeah, right.

[Bob Wilkin]

You know, like when an axe head gets thrown into the creek and it flows. Yeah. The wood on the handle represents the wood of the cross and the metal of the ax represents the nails of the cross.

[Ken Yates]

Oh, man.

[Bob Wilkin]

So, yeah, it doesn't surprise me that they find that Nestor as well.

[Ken Yates]

Well, and also the Song of Solomon. The Song of Solomon is about marital love.

[Bob Wilkin]

Right.

[Ken Yates]

It only mentions God's name once and most translations don't get it. It talks about the fire of Yah, and instead of translating it fire of Yah, it's often translated something like intense fire or something like that. But nobody's going to get born again reading the Song of Solomon or Second John or Third John or. Or let's say Philemon. How somebody get born again reading about this slave that's going back to Philemon.

[Bob Wilkin]

I'll take it a step further. You mentioned I did a commentary on Mark, read the Gospel of Mark. There's no clear. Here's a gospel representation of believing in Jesus for eternal life.

[Ken Yates]

Isn't that true in all three of the Synoptics?

[Bob Wilkin]

That's exactly right.

[Ken Yates]

There are some allusions, but there's not direct statements. And even in the epistles and even a verse like Ephesians 2, 8, 9, which is how I came to faith. Somebody has to supply Christ for by grace you have been saved through faith. There's nothing about Jesus Christ in that verse.

[Bob Wilkin]

Right.

[Ken Yates]

So when it was shared to me, it was by grace you are saved through faith in Jesus Christ. And that, not of yourselves, is the Gift of God, not of works, as anyone should boast. But you've got to supply Jesus Christ there or go further back in the context to find it. But the point is that verse was not evangelistic. Paul is using it to remind them that they are born again. And verse 10 of Ephesians 2, that they are part of a new body called the Body of Christ.

[Bob Wilkin]

Jews and Gentiles in one body, united in one body.

[Ken Yates]

That's why he switches from you to we in verse 10. The whole point of the Bible is that every book except the Gospel of John is designed to get people to please God.

[Bob Wilkin]

And I just want to say on this, just logically this makes sense because when you read Matthew, Mark and Luke, very similar, they're called the Synoptic Gospels for a reason, to see together, see as a unit or whatever. John's completely different. I forgot what it was like.92% of the material in John is unique to the Gospel of John. Something like that.

[Ken Yates]

That's right. Now, of course, John's Gospel wants people to please God too. But the ultimate way we please God, the initial way we please God is by believing in His Son. Right?

[Bob Wilkin]

Right.

[Ken Yates]

This is my beloved Son, Hear him. God the Father wants everyone to believe in His Son. And so we need to recognize that John's Gospel is evangelistic. It's the only evangelistic book. Now, people can come to faith through other verses in the Bible, but they're only going to come to faith by believing the right message. And that right message is found in the Gospel of John. And the reason why most people flee the Gospel of John is because they don't believe that simply by faith in Jesus, a person has everlasting life. They believe you've got to be committed, you've got to turn from your sins,

[Bob Wilkin]

you got to be a disciple, you

[Ken Yates]

got to follow him. You got to persevere to the end. And so they go and pick verses here, there and everywhere. The reason we stick with the Gospel of John is because the Gospel of John is evangelistic.

[Bob Wilkin]

And it was written for that purpose.

[Ken Yates]

It was written for that purpose. We're using it right. We're using a hammer as a hammer. We're not using a saw to try to drive in a nail.

[Bob Wilkin]

And remember, keep grace in focus.

[Host]

We invite you to check out our Monday, Wednesday and Friday five minute YouTube videos at YouTube Grace Evangelical Society. You will love the content and learn a lot. There are a lot of costs involved in staying on the air. That's why we so much appreciate our financial partners. If you'd like to learn how to become one. You can find out more by going to faithalone.org on our next episode. How do I get my name in the Lamb's Book of Life? Please join us. And until then, let's keep grace in focus.

[Bob Wilkin]

The proceeding has been a listener supported

[Host]

ministry from the Grace Evangelical Society.