He turned the sea into dry land: they went through the flood on foot; there did we rejoice in him. The passage of the Red Sea at the time of the Exodus was one of the most wonderful of God's works. To the Israelites it was altogether a matter of joy and rejoicing (see Exodus 15:1-21).
But how terrible a thing was it to the Egyptians! "The waters returned, and covered the chariots, and the horsemen, and all the host of Pharaoh that came into the sea after them; there remained not so much as one of them" (Exodus 14:28).