6:25-32 See the power of God's grace, that he could raise up a reformer; and the kindness of his grace, that he would raise up a deliverer, out of the family of a leader in idolatry. Gideon must not think it enough not to worship at that altar; he must throw it down, and offer sacrifice on another. It was needful he should make peace with God, before he made war on Midian. Till sin be pardoned through the great Sacrifice, no good is to be expected. God, who has all hearts in his hands, influenced Joash to appear for his son against the advocates for Baal, though he had joined formerly in the worship of Baal. Let us do our duty, and trust God with our safety. Here is a challenge to Baal, to do either good or evil; the result convinced his worshippers of their folly, in praying to one to help them that could not avenge himself.
25. Take thy father's … second bullock—The Midianites had probably reduced the family herd; or, as Gideon's father was addicted to idolatry, the best may have been fattened for the service of Baal; so that the second was the only remaining one fit for sacrifice to God.
throw down the altar of Baal that thy father hath—standing upon his ground, though kept for the common use of the townsmen.
cut down the grove that is by it—dedicated to Ashtaroth. With the aid of ten confidential servants he demolished the one altar and raised on the appointed spot the altar of the Lord; but, for fear of opposition, the work had to be done under cover of night. A violent commotion was excited next day, and vengeance vowed against Gideon as the perpetrator. "Joash, his father, quieted the mob in a manner similar to that of the town clerk of Ephesus. It was not for them to take the matter into their own hands. The one, however, made an appeal to the magistrate; the other to the idolatrous god himself" [Chalmers].