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.
John 20:30-31

This is the disciple who testifies of these things, and wrote these things; and we know that his testimony is true. And there are also many other things that Jesus did, which if they were written one by one, I suppose that even the world itself could not contain the books that would be written. Amen.
John 21:24-25

John gave two conclusions to his gospel record. We can learn from both.

The first (20:30-31), reveals John’s purpose in writing the Gospel of John. He recorded a number of “signs” (miracles) Jesus performed. There are seven key signs in John’s Gospel. He recorded these so that those who do not believe, and therefore are not saved, would believe and be saved. Don’t miss the following:

John’s Gospel, inspired by the Holy Spirit, is written to lead non-believers to saving faith. I confess, I have always thought John’s Gospel is the most difficult to understand. That is why I used to tell non-believers to read Mark, as it is fast-paced and easier to follow. But upon deeper consideration, if the Holy Spirit says John is a book for non-believers to read to be saved, I now trust Him to do the saving. I still recommend Mark in some instances, but John is the book the Holy Spirit says is for non-believers to read to become believers.
Salvation is God’s gift based on the finished work of Christ, but it is through faith that we receive this gift. It is by believing Christ and the gospel that one “receives” eternal life in Jesus’ name.

John’s second and final conclusion simply, and more importantly, reminds us that the Person and work of Jesus is greater than any written gospel account can contain. That is not to say there are things we need to know that are not in the gospels. Everything we need to know is in the gospels. But isn’t it wonderful to know that our Savior and Lord is greater than even the inspired words of the Bible can contain?

These two conclusions contain great truths about our great Lord and Savior.