16. they put away the strange gods . . . and served the Lord; and his soul was grieved for the misery of Israel—On their abandonment of idolatry and return to purity of worship, God graciously abridged the term of national affliction and restored times of peace.

     17, 18. the children of Ammon were gathered together—From carrying on guerrilla warfare, the Ammonites proceeded to a continued campaign. Their settled aim was to wrest the whole of the trans-jordanic territory from its actual occupiers. In this great crisis, a general meeting of the Israelitish tribes was held at Mizpeh. This Mizpeh was in eastern Manasseh (Jos 11:3).