In answering the disciples' question about the destruction of the temple, Jesus foretells signs of an imminent temporal event which will take place in the lifetime of his audience. Instead of end times speculation, the church needs to be busy with gospel proclamation and mission.
We have received a kingdom and an inheritance, but woe to us if we now take offence at God's Word. The Lord will crush those who deny Him the fruit of His vineyard.
Note: the video is missing the first two minutes of this sermon but it is available on the audio-only file via the "Listen" link.