Exodus 34:18

18You are to keep the Feast of Unleavened Bread.34:18 That is, the seven-day period after the Passover during which no leaven may be eaten; see Exodus 12:14–20. For seven days at the appointed time in the month of Abib,34:18 Abib was the first month of the ancient Hebrew lunar calendar, usually occurring within the months of March and April; twice in this verse. you are to eat unleavened bread as I commanded you. For in the month of Abib you came out of Egypt.