Because the Syrians have said, &c. What they had said, this man of God knew, either from common report, strengthened by their present choice of plain ground for the battle; or rather, by revelation from God, to whose inspection their secret counsels lay open, 2 Kings 6:12. His omnipotence being disputed, he sent his prophet to predict the vengeance coming on his enemies; and their defeat in the plains was a singular and undeniable confirmation, both of his omnipotence and veracity. Ye shall know that I am the Lord Namely, the universal Lord of all places, persons, and things.
Related Commentaries of 1 Kings 20:28
1 Kings 20:28
28 And there came a man of God, and spake unto the king of Israel, and said, Thus saith the LORD, Because the Syrians have said, The LORD is God of the hills, but he is not God of the valleys, therefore will I deliver all this great multitude into thine hand, and ye shall know that I am the LORD.