Exodus 13:4-5

4On this day in the 1month of Abib, you are about to go forth.

5It shall be when the Lord 2brings you to the land of the Canaanite, the Hittite, the Amorite, the Hivite and the Jebusite, which 3He swore to your fathers to give you, a land flowing with milk and honey, 4that you shall 5observe this rite in this month.