Matthew 24:6

24:6 You will hear of wars and rumors of wars. Make sure that you are not alarmed, for this must happen, but the end is still to come.

Matthew 24:14

24:14 And this gospel of the kingdom will be preached throughout the whole inhabited earth as a testimony to all the nations, and then the end will come.

Matthew 24:21-22

24:21 For then there will be great suffering unlike anything that has happened from the beginning of the world until now, or ever will happen. 24:22 And if those days had not been cut short, no one would be saved. But for the sake of the elect those days will be cut short.