And the LORD was with Jehoshaphat, because he walked in the first ways of his father David, and sought not unto Baalim; The Lord was with Jehoshaphat - "The Word of the Lord was Jehoshaphat's Helper." - Targum.
Related Commentaries of 2 Chronicles 17:3
2 Chronicles 17:3
3 And the LORD was with Jehoshaphat, because he walked in the first ways of his father David, and sought not unto Baalim;