Exodus 12:15

15 aSeven days you shall eat unleavened bread. On the first day you shall remove leaven out of your houses, for if anyone eats what is leavened, from the first day until the seventh day, bthat person shall be cut off from Israel.

Exodus 13:6

6 cSeven days you shall eat unleavened bread, and on the seventh day there shall be a feast to the Lord.

Leviticus 23:6

6And on the fifteenth day of the same month is the Feast of Unleavened Bread to the Lord; for seven days you shall eat unleavened bread.

Numbers 28:16-17

Passover Offerings

16 d“On the fourteenth day of the first month is the Lord’s Passover, 17 eand on the fifteenth day of this month is a feast. Seven days shall unleavened bread be eaten.

Deuteronomy 16:16

16 fThree times a year all your males shall appear before the Lord your God at the place that he will choose: at the Feast of Unleavened Bread, at the Feast of Weeks, and at the Feast of Booths. gThey shall not appear before the Lord empty-handed.

Isaiah 25:6

6 hOn this mountain the Lord of hosts will make for all peoples
a feast of rich food, a feast of well-aged wine,
iof rich food full of marrow, of aged wine well refined.
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