1 Thessalonians 5:2, 4, 5, 6

for you know very well that the day of the Lord will come like a thief in the night.

But you, brothers and sisters, are not in darkness so that this day should surprise you like a thief.

You are all children of the light and children of the day. We do not belong to the night or to the darkness.

So then, let us not be like others, who are asleep, but let us be awake and sober.