So Moses said to Joshua, “Choose men for us and go out, fight against Amalek [and his people]. Tomorrow I will stand on the top of the hill with the staff of God in my hand.”
and they did not know or understand until the flood came and swept them all away; so will the coming of the Son of Man be [unexpected judgment]. [Gen 6:5-8; 7:6-24]
For you yourselves know perfectly well that the day of the [return of the] Lord is coming just as a thief [comes unexpectedly and suddenly] in the night.
You shall do [the same] to Ai and its king as you did to Jericho and its king; [except that] you shall take only its spoil and its cattle as plunder for yourselves. Set up an ambush for the city behind it [on the west side].”
He commanded them, saying, “Listen closely, you are going to lie in wait and ambush the city from behind it. Do not go very far away from the city, but all of you be ready.
But the day of the Lord will come like a thief, and then the heavens will vanish with a [mighty and thunderous] roar, and the [material] elements will be destroyed with intense heat, and the earth and the works that are on it will be burned up.