1-4. Ahaz was twenty years old—(See on 2Ki 16:1-4). This prince, discarding the principles and example of his excellent father, early betrayed a strong bias to idolatry. He ruled with an arbitrary and absolute authority, and not as a theocratic sovereign: he not only forsook the temple of God, but embraced first the symbolic worship established in the sister kingdom, and afterwards the gross idolatry practised by the Canaanites.