'Bow' in the Bible

let their eyes be darkened not to see, and bow down their back alway.

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

For this reason I bow my knees to the Father of our Lord Jesus Christ,

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

And I saw: and behold, a white horse, and he that sat upon it having a bow; and a crown was given to him, and he went forth conquering and that he might conquer.