Matthew Henry on 2 Chronicles 20:20-30
We have here the foregoing prayer answered and the foregoing promise performed, in the total overthrow of the enemies' forces and the triumph (for so it was rather than a victory) of Jehoshaphat's forces over them.
I. Never was army drawn out to the field of battle as Jehoshaphat's was. He had soldiers ready prepared for war (Ch2 17:18), but here is no notice taken of their military equipment, their swords or spears, their shields or bows. But Jehoshaphat took care, 1. That faith should be their armour. As they went forth, instead of calling them to handle their arms, and stand to them, to keep ranks, observe orders, and fight valiantly, he bade them believe in the Lord God and give credit t…
Read the whole note in the consoleJamieson-Fausset-Brown on 2 Chronicles 20:24
when Judah came toward the watchtower in the wilderness--Most probably the conical hill, Jebel Fereidis, or Frank Mountain, from the summit of which they obtained the first view of the scene of slaughter. Jehoshaphat and his people found the field strewed with dead bodies, so that they had not to fight at all, but rather to take possession of an immense booty, the collection of which occupied three days. On the fourth they set out on their return to Jerusalem in the same order and joyful mood as they came. The place where they mustered previous to departure was, from their public thanksgiving service, called, "The Valley of Berachah" ("benediction"), now Wady Bereikut.
Adam Clarke on 2 Chronicles 20:27
Jehoshaphat in the forefront of them - He was their leader in all these spiritual, holy, fatiguing, and self-denying exercises. What a noble and persuasive pattern!
John Gill on 2 Chronicles 20:28
And they came to Jerusalem with psalteries, and harps, and trumpets,.... The three principal instruments of music used in singing the praises of God; these they played upon as they came to the city, and entered it, and passed through it:
unto the house of the Lord; the temple, there to offer praise and thanksgiving again.