Exodus 34:25
Do not offer the blood of a sacrifice to me at the same time you offer anything containing yeast. No part of the sacrifice at the Passover festival should be left over in the morning.
Exodus 23:18
Do not offer the blood of my sacrifice with leavened bread. Do not allow the fat of my feast to remain overnight until morning.
Exodus 12:10
Eat what you want that night, and the next morning burn whatever is left.
Exodus 12:8
That night the animals are to be roasted and eaten, together with bitter herbs (greens) and unleavened bread made without yeast.
Exodus 12:20
You shall not eat anything leavened. Eat unleavened bread in all your dwellings.
Exodus 29:34
If any of the flesh of ordination or any of the bread remains until morning it should be burned with fire. It should not be eaten because it is holy.
Leviticus 7:15
The flesh of the sacrifice of his thanksgiving peace offerings will be eaten on the day of his offering. He should not leave any of it over until morning.
Numbers 9:12
Never leave any of the meat until morning or break any of the animal's bones. Follow all the rules for the Passover when you celebrate it.
Deuteronomy 16:3
Do not eat leavened bread with it. Eat unleavened bread for seven days. It is the bread of affliction. You should remember all the days of your life the day when you came out of the land of Egypt in haste.
1 Corinthians 5:7-8
Purge out the old leaven, that you may be a new batch of dough. For even Christ our Passover has been sacrificed for us.