And he said, “Listen, all Judah and inhabitants of Jerusalem and King Jehoshaphat: Thus says the LORD to you, ‘Do not be afraid and do not be dismayed at this great horde, for the battle is not yours but God’s.
We have here God's gracious answer to Jehoshaphat's prayer; and it was a speedy answer. While he was yet speaking God heard: before the congregation was dismissed they had assurance given them that they should be victorious; for it is never in vain to seek God. 1.
Commenting on 2 Chronicles 20:14-19
And he said, hearken ye, all Judah, and ye inhabitants of Jerusalem, and thou King Jehoshaphat,.... There is a climax or gradation in these words rising from the lowest to the highest; from the people of the cities in the country, to the inhabitants of Jerusalem the metropolis, and from thence to the king the supreme governor: thus saith the Lord unto you, be not...
And he said, Hearken ye, all Judah, and ye inhabitants of Jerusalem, and thou king Jehoshaphat, Thus saith the LORD unto you, Be not afraid nor dismayed by reason of this great multitude; for the battle [is] not yours, but God's. (k) They fight against God and not against you, therefore he will fight for you.