As Pharaoh drew near, the Israelites looked back, and there were the Egyptians advancing on them. In great fear the Israelites cried out to the Lord. They said to Moses, ‘Was it because there were no graves in Egypt that you have taken us away to die in the wilderness? What have you done to us, bringing us out of Egypt? Is this not the very thing we told you in Egypt, “Let us alone and let us serve the Egyptians”? For it would have been better for us to serve the Egyptians than to die in the wilderness.’ But Moses said to the people, ‘Do not be afraid, stand firm, and see the deliverance that the Lord will accomplish for you today; for the Egyptians whom you see today you shall never see again. The Lord will fight for you, and you have only to keep still.’

Then the Lord said to Moses, ‘Why do you cry out to me? Tell the Israelites to go forward. But you lift up your staff, and stretch out your hand over the sea and divide it, that the Israelites may go into the sea on dry ground.

-Exodus 14:10-16