Therefore, let us observe the feast, not with old yeast or with the yeast of malice and evil but with the unleavened bread of sincerity and truth.

You must eat unleavened bread for seven days. On the first day you must remove yeast from your houses. Whoever eats what is leavened from the first day through the seventh day must be cut off from Israel.

Unleavened bread is to be eaten for those seven days. Nothing leavened may be found among you, and no yeast may be found among you in all your territory.

Bring two loaves of bread from your settlements as a presentation offering, each of them made from four quarts of fine flour, baked with yeast, as firstfruits to the Lord.

Why is it you don’t understand that when I told you, ‘Beware of the yeast of the Pharisees and Sadducees,’ it wasn’t about bread?”

Then they understood that He did not tell them to beware of the yeast in bread, but of the teaching of the Pharisees and Sadducees.