Exodus 14:27-29

27So Moses stretched his hand out over the waters, and the sea returned to its strength at the break of dawn. The Egyptians were fleeing from it, but Adonai overthrew them in the midst of the sea.

28The waters returned and covered the chariots, the horsemen and the entire army of Pharaoh that went after them into the sea. Not one of them remained.

29But Bnei-Yisrael had walked on dry land in the midst of the sea, and the waters were like walls to them on their right hand and on their left.