Hebrews 11:28

‘And the blood shall be a sign for you on the houses where you are; and I will see the blood, and I will pass over you, and there shall be no plague among you to destroy you when I strike the land of Egypt.

Then Moses called for all the elders of Israel and said to them, “Bring out and take for yourselves lambs according to your families and slaughter the Passover lamb.

“And Yahweh will pass through to smite the Egyptians; and He will see the blood on the lintel and on the two doorposts, and Yahweh will pass over the doorway and will not allow the destroyer to come into your houses to smite you.

Nor grumble, as some of them did, and were destroyed by the destroyer.