Exodus 13:3-10

Then Moses said to the people, “Remember this day when you came out of Egypt, out of the place of slavery, for the LORD brought you out of here by the strength of his hand. Nothing leavened may be eaten.  Today, in the month of Abib,  , you are going out. When the LORD brings you into the land of the Canaanites, Hethites, Amorites, Hivites, and Jebusites,  which he swore to your ancestors that he would give you, a land flowing with milk and honey,  you must carry out this ceremony in this month.  For seven days you must eat unleavened bread, and on the seventh day there is to be a festival to the LORD. Unleavened bread is to be eaten for those seven days. Nothing leavened may be found among you, and no yeast may be found among you in all your territory. On that day explain to your son, ‘This is because of what the LORD did for me when I came out of Egypt.’  Let it serve as a sign for you on your hand and as a reminder on your forehead,  , so that the LORD’s instruction may be in your mouth; for the LORD brought you out of Egypt with a strong hand. Keep this statute at its appointed time from year to year.