Went forth into the wilderness of Tekoa. — Part of the wilderness of Jeruel (2 Chronicles 20:16). Tekoa (Thekua) is about ten miles south of Jerusalem, and commands a view over the table-land of el Husâsoh.
Jehoshaphat stood. — Or, came forward. The king probably stood in the gate at Jerusalem.
Believe in the Lord your God, so shall ye be established. — An affirmative way of putting the words of Isaiah to Ahaz: “If ye will not believe, surely ye shall not be established” (Isaiah 7:9).
Believe his prophets. — Believe in, as before, i.e., put confidence in their advice and leading.
So shall ye prosper. — And prosper ye. (Comp. 2 Chronicles 18:11.)