'Knee' in the Bible

and he made him to ride in the second chariot which he had; and they cried before him, Bow the knee: and he set him over all the land of Egypt.

By myself have I sworn, the word is gone forth from my mouth in righteousness, and shall not return, that unto me every knee shall bow, every tongue shall swear.

But what saith the answer of God unto him? I have left for myself seven thousand men, who have not bowed the knee to Baal.

For it is written, As I live, saith the Lord, to me every knee shall bow, And every tongue shall confess to God.

that in the name of Jesus every knee should bow, of things in heaven and things on earth and things under the earth,