Did God destroy Sodom or two angels?

Genesis 19:13 - For we will destroy this place, because the cry of them is waxen great before the face of the LORD; and the LORD hath sent us to destroy it.
Genesis 19:24 - Then the LORD rained upon Sodom and upon Gomorrah brimstone and fire from the LORD out of heaven;

The question is: did God Almighty destroy Sodom and Gomorrah, or did two of his agents -- two angels -- destroy Sodom and Gomorrah?