Little children, these are the end times, and as you heard that the Antichrist is coming, even now many antichrists have arisen. By this we know that it is the end times.
It is true of course that those who suppose that the apostles "expected" the coming of Christ to take place concurrently with the destruction of Jerusalem are probably correct in that supposition.  Why?  Because Jesus himself so mingled the prophecies of the two events that such a supposition might easily have followed.  However, true exegesis of the New Testament does not consist in reading into its sacred texts what people suppose the apostles thought, but rather consists in studying what they wrote; and John wrote nothing here, either of the judgment or of the second coming of Christ.