Behold, he comes with clouds; and every eye shall see him, and they also who pierced him: and all tribes of the earth shall wail because of him. Even so, Amen.
All Commentaries on Revelation 1:7 Go To Revelation 1
Nicholas of Lyra
AD 1349
even so. Amen. this is the adverb of affirmation in Latin and similarly Amen in Hebrew, and by means of this double affirmation it is implied that truth is not retractable.