Ezra 6:20
the priests and the Levites made themselves clean together. They were all clean when they put the Passover lamb to death for all those who had come back, and for their brothers the priests and for themselves.
2 Chronicles 35:11
They slaughtered the Passover lambs. The priests sprinkled the blood with their hands while the Levites skinned the lambs.
2 Chronicles 29:34
Since there were not enough priests to kill all these animals, the Levites helped them until the work was finished. By then more priests had made themselves ritually clean. The Levites were more faithful in keeping ritually clean than the priests were.
Exodus 12:21
Moses called all the elders of Israel and said: Take lambs according to your families and slay the Passover lamb.
2 Chronicles 30:15-17
They slaughtered the Passover lambs on the fourteenth of the second month. The priests and Levites were ashamed of themselves. They consecrated themselves and brought burnt offerings to the house of Jehovah.
Hebrews 7:27
He does not have a day-by-day need as the high priests do, first to offer up sacrifices for his own sins, then for those of the people. He sacrificed for sin once for all when he offered up himself.