10 Thou shalt keep this observance at the set time from days to days.
Exodus 13:10 Cross References - DouayRheims
Exodus 12:14
14 And this day shall be for a memorial to you; and you shall keep it a feast to the Lord in your generations, with an everlasting observance.
Exodus 12:24-25
Exodus 23:15
15 Thou shalt keep the feast of unleavened bread. Seven days shalt thou eat unleavened bread, as I commanded thee, in the time of the month of new corn, when thou didst come forth out of Egypt: thou shalt not appear empty before me.
Leviticus 23:6
6 And the fifteenth day of the same month is the solemnity of the unleavened bread of the Lord. Seven days shall you eat unleavened bread.
Deuteronomy 16:3-4
3 Thou shalt not eat with it leavened bread: seven days shalt thou eat without leaven, the bread of affliction, because thou camest out of Egypt in fear: that thou mayst remember the day of thy coming out of Egypt, all the days of thy life.
4 No leaven shall be seen in all thy coasts for seven days, neither shall any of the flesh of that which was sacrificed the first day in the evening remain until morning.