'Knee' in the Bible

and having woven a crown out of thorns, they put it on his head, and a reed in his right hand; and, bowing the knee before him, they mocked him, saying, Hail, King of the Jews!

And they struck his head with a reed, and spat on him, and, bending the knee, did him homage.

But what says the divine answer to him? I have left to myself seven thousand men, who have not bowed knee to Baal.

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

that at the name of Jesus every knee should bow, of heavenly and earthly and infernal beings,