Exodus 12:13-14 ▼

13 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.

14 ‘Now this day will be a memorial to you, and you shall celebrate it as a feast to Yahweh; throughout your generations you are to celebrate it as a perpetual statute.