First Letter to the Thessalonians 5:1-6.
Concerning times and seasons, brothers and sisters, you have no need for anything to be written to you.
For you yourselves know very well that the day of the Lord will come like a thief at night.
When people are saying, “Peace and security,” then sudden disaster comes upon them, like labor pains upon a pregnant woman,and they will not escape.
But you, brothers, are not in darkness, for that day to overtake you like a thief.
For all of you are children of the light and children of the day. We are not of the night or of darkness.
Therefore, let us not sleep as the rest do, but let us stay alert and sober.