Exodus 14:21-22

14:21 Moses stretched out his hand toward the sea, and the Lord drove the sea apart by a strong east wind all that night, and he made the sea into dry land, and the water was divided. 14:22 So the Israelites went through the middle of the sea on dry ground, the water forming a wall for them on their right and on their left.

Exodus 14:29

14:29 But the Israelites walked on dry ground in the middle of the sea, the water forming a wall for them on their right and on their left.