The prophet uses words familiar to the people, and connected with several great deliverances (see the marginal references).
By the “cliff (or, rather - as in the margin - ascent) of Ziz,” we must understand the mountain path which leads up from Engedi across the elevated tract still known as El-Husasah, in the direction of Tekoa 2 Chronicles 20:20.
At the end of the brook - Rather, “at the end of the gulley,” or dry torrent-course. No name like Jeruel has been as yet found in this district.
15 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.
16 To morrow go ye down against them: behold, they come up by the cliffb of Ziz; and ye shall find them at the end of the brook, before the wilderness of Jeruel.
17 Ye shall not need to fight in this battle: set yourselves, stand ye still, and see the salvation of the LORD with you, O Judah and Jerusalem: fear not, nor be dismayed; to morrow go out against them: for the LORD will be with you.