Ezekiel 9:3-4

3Then the glory of the God of Israel went up from above the cheruv, where it had been, to the threshold of the House. He called to the man clothed in linen, who had the scribe’s inkhorn at his side.

4Adonai said to him, “Go throughout the city, through the midst of Jerusalem. Make a mark on the foreheads of the people who sigh and moan over all the abominations that are committed in it.”