6 You are to eat unleavened bread for seven days, and on the seventh day there is to be a festival to the LORD.
Exodus 13:6 Cross References - ISV
Exodus 12:15-20
15 You are to eat unleavened bread for seven days. On the first day be sure to remove all the leaven from your houses, because any person who eats anything leavened from the first day until the seventh will be cut off from Israel.
16 Also, on the first day you’re to hold a holy assembly, and on the seventh day you’re to hold a holy assembly. No work is to be done during those days, except for preparing what is to be eaten by each person.
17 “‘You are to observe the Festival of Unleavened Bread, since on this very day I brought your tribal divisions from the land of Egypt. You are to observe this day from generation to generation as a perpetual ordinance. 18 In the first month, from the evening of the fourteenth day of the month until the evening of the twenty-first day of the month, you are to eat unleavened bread. 19 For seven days leaven is not to be found in your houses. Indeed, any person who eats anything leavened, is to be cut off from the congregation of Israel, whether an alien or a native of the land. 20 You are not to eat what is leavened. You are to eat unleavened bread in all your settlements.’”
17 “‘You are to observe the Festival of Unleavened Bread, since on this very day I brought your tribal divisions from the land of Egypt. You are to observe this day from generation to generation as a perpetual ordinance. 18 In the first month, from the evening of the fourteenth day of the month until the evening of the twenty-first day of the month, you are to eat unleavened bread. 19 For seven days leaven is not to be found in your houses. Indeed, any person who eats anything leavened, is to be cut off from the congregation of Israel, whether an alien or a native of the land. 20 You are not to eat what is leavened. You are to eat unleavened bread in all your settlements.’”
Exodus 34:18
18 “You are to observe the Festival of Unleavened Bread. For seven days, at the appointed time in the month Abib, you are to eat unleavened bread as I commanded you, for in the month Abib you came out of Egypt.
Leviticus 23:8
8 Instead, you are to bring an offering made by fire to the LORD daily for seven days. On the seventh day, you are also to hold a sacred assembly during which you are to do no servile work.”