15-17 Then, on the fourteenth day of that same month, the Levites began killing the lambs for Passover, because many of the worshipers were unclean and were not allowed to kill their own lambs. Meanwhile, some of the priests and Levites felt ashamed because they had not gone through the ceremony to make themselves clean. They immediately went through that ceremony and went to the temple, where they offered sacrifices to please the Lord. Then the priests and Levites took their positions, according to the Law of Moses, the servant of God.As the Levites killed the lambs, they handed some of the blood to the priests, who splattered it on the altar.