[af_vet_1981]

The internal evidence can only give us some ideas as to when it was written. Nothing is guaranteed other than that range of years. The fact that the Temple’s destruction, and Jerusalem’s destruction, is not described as an accomplished fact might suggest it was written BEFORE A.D. 70. The fact that 666 = Nero would strengthen that suggestion since he died in 68. Other factors suggest it was written as the late 90s, however.

Behold, he cometh with clouds; and every eye shall see him, and they also which pierced him: and all kindreds of the earth shall wail because of him. Even so, Amen.

Revelation, Catholic chapter one, Protestant verse seven,
as authorized, but not authored, by King James

There is a significant internal problem with the preterist view of Revelation in the first Catholic chapter. I have not seen any credible evidence that the Early Church Fathers testified that every eye saw Him come in the clouds in 70 AD. St. Irenaeus should have known. Not only that, but I assume the Romans who pierced and crucified the Messiah would not have been at Jerusalem 37 years later due to the terms of service.

In AD 5, the standard term was increased to twenty years plus five years in the reserves.[9] In the period following its introduction, the new term was deeply unpopular with the troops. On Augustus' death in AD 14, the legions stationed on the rivers Rhine and Danube staged major mutinies, and demanded, among other things, reinstatement of a sixteen-year term.[10] Augustus prohibited serving legionaries from marrying, a decree that remained in force for two centuries.[11] This measure was probably prudent in the early imperial period, when most legionaries were from Italy or the Roman colonies on the Mediterranean, and were required to serve long years far from home. This could lead to disaffection if they left families behind.

[Elsie]

Behold, he cometh with clouds; and every eye shall see him, and they also which pierced him:

To them that have eyes; let them see.