Summary of the Book of 3 John
The key personalities in this book are the Apostle John, Gaius, Diotrephes, and Demetrius. This book is the shortest book in the New Testament and was written to praise Gaius and Demetrius for their faithful service.
Verses 1-12 – John praises two teachers for “walking in truth”. He wrote that nothing gave him more joy than to see Christians walking in truth and acting faithfully,
“Beloved, follow not that which is evil, but that which is good. He that doeth good is of God: but he that doeth evil hath not seen God” (vs. 11).
Next, He criticized a false teacher named Diotrephes. John tells of a previous letter (that we do not have) that he sent to the church.
However, Diotrephes rejected the letter out of pride and discouraged anyone from accepting or accommodating any of the brethren of the church.
Verses 13-15 – John brings to a close his letter with confident intentions of making a visit and discussing many topics “face to face” rather than by pen.