Cross reference
1 Samuel 26:7
7 So David and Abishai came to the people by night: and, behold, Saul lay sleeping within the place of the wagons, with his spear stuck in the ground at his head; and Abner and the people lay round about him.
1 Thessalonians 5:2-3
2 For you yourselves know well that the day of the Lord comes like a thief in the night.
3 For when they are saying, "Peace and safety," then sudden destruction will come on them, like birth pains on a pregnant woman; and they will in no way escape.