Exodus 13:7-9

MKJV(i) 7 Unleavened bread shall be eaten seven days. And there shall be no leavened bread seen with you, nor shall there be leaven seen with you in all your borders. 8 And you shall tell your son in that day, saying, This is because of what Jehovah did for me when I came out from Egypt. 9 And it shall be a sign to you upon your hand, and for a memorial between your eyes, that Jehovah's Law may be in your mouth. For the Lord has brought you out of Egypt with a strong hand.