Exodus 12:12-13 ▼

12 I will pass through the land of Egypt on that night and strike every firstborn male in the land of Egypt, both man and beast. I am Yahweh; I will execute judgments against all the gods of Egypt.

13 The blood on the houses where you are staying will be a distinguishing mark for you; when I see the blood, I will pass over you. No plague will be among you to destroy you when I strike the land of Egypt.”