And Jehoshaphat. — And he was afraid (scil., at the news). And Jehoshaphat set his face, &c. Literally, put his face — a phrase used in Daniel 9:3 (comp. 2 Kings 12:18), and implying resolved, determined.
To seek the Lord. — The Hebrew construction is that of 2 Chronicles 15:13 (le is here a sign of the accusative).
Proclaimed a fast. — An act of national self-humiliation, implying an admission of guilt, and intended to evoke the Divine pity and succour. (Comp. Judges 20:26; Joel 2:12-17; 1 Samuel 7:6; Ezra 8:21.)