The Lord set ambushments - These liers in wait have been regarded as angels employed by God to confuse the host and cause its destruction, so that the Moabites and Ammonites first united to destroy the Edomites, and then turned upon each other.
Related Commentaries of 2 Chronicles 20:22
2 Chronicles 20:22
22 And whenc they began to sing and to praise, the LORD set ambushments against the children of Ammon, Moab, and mount Seir, which were come against Judah; and they were smitten.