What evidence is there to prove that John's Gospel was written first?

Answer 1

It wasn't. Mark was first written. John wrote his account of the Gospel about A.D. 95-97. Probably during the reign of Nerva.

Answer 2

Mark was written around 70 AD. That was probably the first GOSPEL to be written, but of the epistles, Thessalonians was first, around 51 AD.

The entire church did not automatically accept every inspired writing until they were made canonical at the end of the 3rd century. The 4 bible Gospels were widely accepted around 120 AD.
A Visual Diagram of the History of the New Testament Canon
http://ic.net/~erasmus/RAZ45.HTM

Answer 3

Irenaeus commented that John wrote after the first three Gospels. Clement of Alexandria (recorded by Eusebius) said that John wrote to supplement the writings of the other Gospels. Clement, writing from Rome in about A.D. 96 refers only to
Matthew, Mark, Luke, and 8 other New Testament books. So many tend to date John's Gospel in the 90's. However John's mention of the five porches of the pool called Bethesda at Jerusalem speaks of it in the present tense "is" (John 5:2), and we know Jerusalem was completely destroyed in Sept of 70AD.

What's more interesting is the gospel "according to John" is the only "verily verily" gospel account, the others being "verily". And in the gospel according to John Jesus plays two parts: Son of man and Son of God, with two resurrections mentioned.

What's even more interesting is the surname of John is Mark, and Luke's writings of Luke and Acts follow Mark and John; Perhaps as Luke notes, to set things in order, perhaps things out of order.

Let us remember every good mystery has twists to it, and the word "mystery" occurs over 20 times in the New Testament.

What's most interesting is Revelation is not written by John as many suppose, but by Paul, since it is sign-ified in Rev 22:21 with Paul's salutation, the token in every Pauline epistle written by his own hand, as told us thrice in 1Cor 16; Col 4; 2Thess 3.

Answer 4

I think it was actually written last.