David Chilton wrote:

Jesus declared that by the time of Jesualem's destruction in AD70, ALL Biblical prophecy would have been fulfilled: Luke 21:22 says: "For these (the days of Jerusalem's destruction in AD 70) be the Days of Vengeance (good book title!), that ALL things which are written may be fulfilled." (See also Acts 3:24.)

Was Jesus right or wrong?

If He was right, ALL prophetic events foretold in the Old Testament were fulfilled by AD 70!

And if Jesus was WRONG, we've got bigger problems than Eschatology to deal with!
It means we can't trust the Red Letters in our Bibles! If Jesus was mistaken in Luke 21:22, can He be right in John 3:16?
If we can't trust His words about Eschatology, can we trust Him for Salvation?