Bible Verses about “avenging angels”

“Thou believest that there is one God; thou doest well: the devils also believe, and tremble.”

“Be not forgetful to entertain strangers: for thereby some have entertained angels unawares.”

“Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?”

“And [that] they may recover themselves out of the snare of the devil, who are taken captive by him at his will.”

“And the angels which kept not their first estate, but left their own habitation, he hath reserved in everlasting chains under darkness unto the judgment of the great day.”