1 Chronicles 15:14
So the priests and the Levites made themselves holy in order to move the Ark of Jehovah the God of Israel.
Leviticus 10:3
Moses said to Aaron: This is what Jehovah was speaking about when he said: 'All who serve me must respect my holiness. I will reveal my glory to my people.' But Aaron remained silent.
2 Chronicles 29:15
These men gathered their relatives and performed the ceremonies to make themselves holy. They obeyed the king's order from Jehovah's word and entered the Temple to make it clean.
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.
Joel 2:16-17
Gather the people, sanctify the congregation, assemble the elders, gather the children, and those that suck the breasts. Let the bridegroom go forth from his chamber, and the bride out of her closet.