Cross reference
Leviticus 23:6
6 And on the fifteenth day of the same month is the feast of unleavened bread; for seven days let your food be unleavened bread.
Exodus 12:15-16
15 For seven days let your food be unleavened bread; from the first day no leaven is to be seen in your houses: whoever takes bread with leaven in it, from the first till the seventh day, will be cut off from Israel.
16 And on the first day there is to be a holy meeting and on the seventh day a holy meeting; no sort of work may be done on those days but only to make ready what is necessary for everyone's food.
Exodus 34:18
18 Keep the feast of unleavened bread; for seven days your food is to be bread without leaven, as I gave you orders, at the regular time in the month Abib; for in that month you came out of Egypt.
Deuteronomy 16:8
8 For six days let your food be unleavened bread; and on the seventh day there is to be a holy meeting to the Lord your God; no work is to be done.
Exodus 13:6-7
6 For seven days let your food be unleavened cakes; and on the seventh day there is to be a feast to the Lord.
7 Unleavened cakes are to be your food through all the seven days; let no leavened bread be seen among you, or any leaven, in any part of your land.
Numbers 28:17-18
17 On the fifteenth day of this month there is to be a feast; for seven days let your food be unleavened cakes.
18 On the first day there is to be a holy meeting: you may do no sort of field-work:
Acts 12:3-4
3 And when he saw that this was pleasing to the Jews he went on to take Peter in addition. This was at the time of the feast of unleavened bread.
4 And having taken him, he put him in prison, with four bands of armed men to keep watch over him; his purpose being to take him out to the people after the Passover.