Immediately, because Herod did not give glory to God, an angel of the Lord struck him down, and he was eaten by worms and died.
23. Forthwith he smote him. As, before, the angel was a minister of God’s grace in the delivery of Peter, so now he taketh vengeance upon Herod. And God doth sometimes use the ministry of angels in heaven in punishing; but sometimes he maketh the devils as hangmen, by whose hand he executeth his judgments. And this doth he as well toward his faithful servants as toward the reprobate.
In these verses we have, I. The death of Herod. God reckoned with him, not only for his putting James to death, but for his design and endeavour to put Peter to death; for sinners will be called to an account, not only for the wickedness of their deeds, but for the wickedness of their endeavours (Psa 28:4), for the mischief they have done and...
Commenting on Acts 12:20-25
And immediately the angel of the Lord smote him,.... With a disease after mentioned; this angel, according to Josephus, appeared in the form of an owl; for he says, that a little after (the shout of the people) the king looked up, and saw an owl sitting upon a rope over his head; whom he immediately understood to be an angel, or messenger of evil...