1 Corinthians 5:7-8

You must clean out the old yeast and become fresh dough, free from the old as you really are. For our Passover lamb is already sacrificed; it is Christ himself.

Treasury of Scripture Knowledge

Summary

And Hezekiah sent to all Israel and Judah, and wrote letters also to Ephraim and Manasseh, that they should come to the house of the LORD at Jerusalem, to keep the passover unto the LORD God of Israel.

Bible References

To keep

1 Corinthians 5:7
You must clean out the old yeast and become fresh dough, free from the old as you really are. For our Passover lamb is already sacrificed; it is Christ himself.