John Wesley on Genesis 32:12

Thou saidst, I will surely do thee good - The best we can say to God in prayer is, what he hath said to us. God's promises as they are the surest guide of our desires in prayer, and furnish us with the best petitions, so they are the firmest ground of our hopes, and furnish us with the best pleas. Thou saidst, I will do thee good - Lord, do me good in this matter. He pleads also a particular promise, that of the multiplying of his seed. Lord, what will become of that promise, if they be all cut off?