Matthew 24:6-8
And you will hear of wars and rumors of wars. See that you are not alarmed, for this must take place, but the end is not yet. For nation will rise against nation, and kingdom against kingdom, and there will be famines and earthquakes in various places. All these are but the beginning of the birth pains.
Matthew 24:44
Therefore you also must be ready, for the Son of Man is coming at an hour you do not expect.