Ezekiel 9:2-4

2Behold, six men [angelic beings] came from the direction of the Upper Gate, which faces north, each with his battle-axe in his hand; and among them was a certain man clothed in linen, with a scribe’s writing case at his side. They entered and stood beside the bronze altar.

3Then the [Shekinah] glory and brilliance of the God of Israel (the cloud) went up from the cherubim on which it had rested, to [stand above] the threshold of the [Lord’s] temple. And the Lord called to the man clothed with linen, who had the scribe’s writing case at his side.

4The Lord said to him, “Go through the midst of the city, throughout all of Jerusalem, and put a mark on the foreheads of the men who sigh [in distress] and grieve over all the repulsive acts which are being committed in it.”