If any of the flesh from the consecrations or from the bread remains until the morning, then you shall burn the remainder with fire. It shall not be eaten, because it is holy.
No grain offering that you bring to the Lord shall be made with leaven, for you shall not burn leaven, nor any honey as a food offering by fire to the Lord.
The flesh of the sacrifice of his peace offerings for thanksgiving shall be eaten the same day that it is offered; he shall not leave any of it until the morning.
He told them another parable: “The kingdom of heaven is like yeast which a woman took and mixed in sixty pounds of meal until it had leavened the whole batch.”
You must not eat leavened bread with it. For seven days you must eat unleavened bread, the bread of affliction, for you came out of the land of Egypt in a hurry, so that you may remember all the days of your life the day when you came out of the land of Egypt.
There must not be any leavened bread seen with you within all your borders for seven days, nor may any of the meat which you sacrificed in the evening on the first day remain overnight until morning.