John Calvin Commentary Genesis 19:13

"for we will destroy this place, because the cry of them is waxed great before Jehovah: and Jehovah hath sent us to destroy it." — Genesis 19:13 (ASV)

The Lord has sent us to destroy it. This passage teaches us that the angels are ministers of God's wrath, as well as of his grace. Nor does it contradict this statement that elsewhere this latter service is specifically attributed to holy angels, as when the Apostle says they were appointed for the salvation of those whom God had adopted as sons (Hebrews 1:14).

And the Scripture, in various places, testifies that the guardianship of the pious is committed to them (Psalms 91:11); while, on the other hand, it declares that God executes his judgments by reprobate angels (Psalms 78:49). For it must be maintained that God causes his elect angels to preside over those judgments which he executes by means of the reprobate.

For it would be absurd to attribute to devils the honor of presiding over the judgments of God, since they do not voluntarily obey him, but rather, while defiantly raging against him, are yet reluctantly compelled to become his executioners. Therefore, let us understand that it is not inconsistent with the office of elect angels to descend armed to execute Divine vengeance and inflict punishment.

As the angel of the Lord destroyed, in one night, the army of Sennacherib which besieged Jerusalem (2 Kings 19:35); so also the angel of the Lord appeared to David with his drawn sword when the pestilence was raging against the people (2 Samuel 24:16). But, as I have previously said, the angels repeat what they had previously said to Abraham concerning the cry of Sodomy, so that they might more urgently impel Lot, by a detestation of the place, to flee, and might induce him, by the fear of God's wrath, to seek safety.