The priests and Levites had all made themselves clean for their special work. The Levites killed the lambs for the Passover sacrifice. They did that on behalf of all the people, the priests and themselves. Ezra 6:20
原來，祭司和利未人一同自潔，無一人不潔淨。利未人為被擄歸回的眾人和他們的弟兄眾祭司，並為自己宰逾越節的羊羔。 以斯拉記 6:20