The following passages seem to say that Jesus expected to return while the current generation was still alive. Was He wrong?
Mark 8:38-9:1 - Those standing here will see the Kingdom of God.
Mark 13:30 - This generation will not pass away until all these things have happened.
Luke 9:26-27 - those standing here will see the Kingdom of God
Luke 21:23 - This generation will not pass away until all these things have happened
This Generation Will Not Pass Away. Really? - Peter Cheyne