To him which divided the Red sea into parts - More literally, “Parted it into parts;” made parts of that which before was unbroken and a whole. It was actually divided into two parts, so that the Hebrews passed between them: Exodus 14:21-22.
For his mercy ... - This, too, was an exercise of mercy, or a manifestation of benevolence toward them and toward the world, to be measured by all the good which would result from it in itself, and by all the power which was put forth to effect it.