"But of the times and the seasons,brethren,ye have no need that I write unto you.
For yourselves know perfectly that the day of the Lord so cometh as a thief in the night.
For when they shall say,Peace and safety;then sudden destruction cometh upon them,as travail upon a woman with child;and they shall not escape.
But ye,brethren,are not in darkness,that that day should overtake you as a thief."
1 Thessalonians 5:1-4