Genesis 32:9-12

9. O God of my father Abraham. Having arranged his affairs as the necessity of the occasion suggested, he now retakes himself to prayer. And this prayer is evidence that the holy man was not so oppressed with fear as to prevent faith from proving victorious. For he does not, in a hesitating manner, commend himself and his family to God; but trusting both to God’s promises and to the benefits already received, he casts his cares and his troubles into his heavenly Father’s bosom. We have declared before, what is the point aimed at in assigning these titles to God; in calling God the God of his fathers Abraham and Isaac, and what the terms mean; namely, that since men are so far removed from God, that they cannot, by their own power, ascend to his throne, he himself comes down to the faithful. God in thus calling himself the God of Abraham and Isaac, graciously invites their son Jacob to himself: for, access to the God of his fathers was not difficult to the holy man. Again, since the whole world had sunk under superstition, God would have himself to be distinguished from all idols, in order that he might retain an elect people in his own covenant. Jacob, therefore, in expressly addressing God as the God of his fathers, places fully before himself the promises given to him in their person, that he may not pray with a doubtful mind, but may securely rely on this stay, that the heir of the promised blessing will have God propitious towards him. And indeed we must seek the true rule of prayer in the word of God, that we may not rashly break through to Him, but may approach him in the manner in which he has revealed himself to us. This appears more clearly from the adjoining context, where Jacob, recalling the command and promise of God to memory, is supported as by two pillars. Certainly the legitimate method of praying is, that the faithful should answer to God who calls them; and thus there is such a mutual agreement between his word and their vows, that no sweeter and more harmonious symphony can be imagined. “O Lord,” he says, “I return at thy command: thou also didst promise protection to me returning; it is therefore right that thou shouldest become the guide of my journey.” This is a holy boldness, when, having discharged our duty according to God’s calling, we familiarly ask of him whatsoever he has promised; since he, by binding himself gratuitously to us, becomes in a sense voluntarily our debtor. But whoever, relying on no command or promise of God, offers his prayers, does nothing but cast vain and empty words into the air. This passage gives stronger confirmation to what has been said before, that Jacob did not falsely pretend to his wives, that God had commanded him to return. For if he had then spoken falsely, no ground of hope would now be left to him. But he does not scruple to approach the heavenly tribunal with this confidence, that he shall be protected by the hand of God, under whose auspices he had ventured to return to the land of Canaan.