'Back' in the Bible

And 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 dry land, and the waters were divided.

Then Jethro, Moses' father in law, took Zipporah, Moses' wife, after he had sent her back,

If thou meet thine enemy's ox or his ass going astray, thou shalt surely bring it back to him again.

And I will take away mine hand, and thou shalt see my back parts: but my face shall not be seen.