TSK · 2 Chronicles 35:17

For seven days you must eat bread made without yeast, and on the seventh day there is to be a festival to the LORD.

“You must keep the Feast of Unleavened Bread. For seven days you must eat bread made without yeast, as I commanded you; do this at the appointed time of the month Abib, for in the month Abib you came out of Egypt.

Passover and Unleavened Bread“‘On the fourteenth day of the first month is the LORD’s Passover.

You must eat bread made without yeast for six days. The seventh day you are to hold an assembly for the LORD your God; you must not do any work on that day.

Clean out the old yeast so that you may be a new batch of dough– you are, in fact, without yeast. For Christ, our Passover lamb, has been sacrificed.