Bede

The wicked always seeks conflict, etc. A cruel angel is an unclean spirit who is sent by the Lord against sinners to afflict them in the present; just as he afflicted the Egyptians to whom he sent the wrath of his indignation, indignation, and wrath, and tribulation, impositions by evil angels, or even after death to eternal destruction. But on the other hand, the Lord will send his angel around those who fear him, and he will deliver them.

Commentary on Proverbs ↗