Matthew Poole and continuators on Psalms 78:49

49 He cast upon them the fierceness of his anger, wrath, and indignation and trouble, by sending evil angels among them .

Other most grievous plagues which were mixed with, and were the effects of his anger and wrath; whereby their miseries were greatly aggravated and distinguished from the afflictions which God sent upon the Israelites in Egypt, which were onely fatherly chastisements and the effects of God's love and occasions of their deliverance.

Heb. the sending (or the operation or effects) of evil Angels, or of the Angels or messengers of evil things, either of the Angels whom God imployed in producing these plagues; or of Moses and Aaron, who were to the Egyptians messengers of evil, and by whom these judgments were sent to and inflicted upon them.

Marginal references: Heb▪ Angels of evils.