'Passover lambs' in the Bible

For there were many in the assembly who had not consecrated themselves [that is, become ceremonially clean and free from all sin]; so the Levites had to slaughter the Passover lambs for everyone who was not clean, in order to make them holy for the Lord.

Slaughter the Passover lambs and consecrate yourselves, and prepare for your fellow countrymen to carry out (obey) the word of the Lord given by Moses.”

They slaughtered the Passover lambs, and while the priests sprinkled the blood received from their hand, the Levites skinned the animals.

So they roasted the Passover lambs on the fire according to the ordinance; and they cooked the holy offerings in pots, in kettles, and in pans, and quickly brought them to all the lay people.