A.T. Robertson Commentary Matthew 24:34

"Verily I say unto you, This generation shall not pass away, till all these things be accomplished." — Matthew 24:34 (ASV)

This generation (η γενεα αυτη). The problem is whether Jesus is here referring to the destruction of Jerusalem or to the second coming and end of the world. If to the destruction of Jerusalem, there was a literal fulfilment. In the Old Testament a generation was reckoned as forty years. This is the natural way to take verse 34 as of 33 (Bruce), "all things" meaning the same in both verses.