Then Moses stretched out his hand over the sea; and the LORD caused the sea to go back by a strong east wind all that night, and made the sea into dry land, and the waters were divided.
Exodus 14:21
Surrounding context
14:20 So it came between the camp of the Egyptians and the camp of Israel. Thus it was a cloud and darkness to the one, and it gave light by night to the other, so that the one did not come near the other all that night.
14:21 Then Moses stretched out his hand over the sea; and the LORD caused the sea to go back by a strong east wind all that night, and made the sea into dry land, and the waters were divided.
14:22 So the children of Israel went into the midst of the sea on the dry ground, and the waters were a wall to them on their right hand and on their left.