2 Chronicles 20:22

22 And when they began to sing and to praise, the LORD set the sons of Moab and those of Mount Seir to ambush the sons of Ammon, who were coming against Judah; and they smote one another.

2 Chronicles 20:22 Meaning and Commentary

2 Chronicles 20:22

And when they began to sing and to praise
They sung more or less all the way they went, from the time they set out, but when they came nearer the enemy, they sung louder and louder: the Lord set ambushments against the children of Ammon, Moab, and Mount
Seir, which came against Judah;
some take them to be their own ambushments, which they set for the destruction of Judah; but the Lord turned them against their own confederates, mistaking them for Jews; so the Vulgate Latin version,

``the Lord turned their ambushments against themselves;''

or rather these were angels, who appeared in the form of the Edomites, and so fell upon the Ammonites and Moabites: and they were smitten;
by them, many of them were destroyed; hence it follows,

2 Chronicles 20:22 In-Context

20 And when they arose early in the morning and while they were going forth into the wilderness of Tekoa, Jehoshaphat stood and said, Hear me, O Judah, and ye inhabitants of Jerusalem; Believe the LORD your God, and ye shall be secure; believe his prophets, and ye shall be prospered.

21 And when he had consulted with the people, he appointed some to sing unto the LORD and to praise in the beauty of holiness, while the army went out and to say, Praise the LORD, for his mercy endures for ever.

22 And when they began to sing and to praise, the LORD set the sons of Moab and those of Mount Seir to ambush the sons of Ammon, who were coming against Judah; and they smote one another.

23 And the sons of Ammon and Moab rose up against the inhabitants of Mount Seir, utterly to slay and destroy them; and when they had made an end of the inhabitants of Seir, each one helped his companion to kill himself.

24 And when Judah came to the watch tower of the wilderness, they looked for the multitude, and, behold, they were fallen to the earth dead, for none had escaped.