Exodus 13:3-5

3Moses said to the people, “Remember this day, on which you came out from Egypt, out of the house of bondage. For by a strong hand Adonai brought you out from this place. No hametz may be eaten.

4This day, in the month of Aviv, you are going out.

5When Adonai brings you into the land of the Canaanites, the Hittites, the Amorites, the Hivites and the Jebusites, which He swore to your fathers to give you, a land flowing with milk and honey, you are to observe this service during this month.