17:11 I counsel - His pretence was, that they might make sure, though slow work: his design was to gain David time, that he might increase his army, and make better provision for the battle; and that the present heat of the people might be cooled, and they might bethink themselves of their duty, and return to their allegiance. Thou - For thy presence will put life and courage into thy soldiers, who will be ambitious to shew their skill and courage in defending thy person, when they know that all their actions are observed by him who hath the distribution of rewards and punishments in his hands. Besides, the glory of the victory will be wholly thine, which now Ahithophel seeks to get to himself.
17:1-21 Here was a wonderful effect of Divine Providence blinding Absalom's mind and influencing his heart, that he could not rest in Ahithophel's counsel, and that he should desire Hushai's advice. But there is no contending with that God who can arm a man against himself, and destroy him by his own mistakes and passions. Ahithophel's former counsel was followed, for God intended to correct David; but his latter counsel was not followed, for God meant not to destroy him. He can overrule all counsels. Whatever wisdom or help any man employs or affords, the success is from God alone, who will not let his people perish.