'Bow' in the Bible

Let their eyes be darkened, that they may not see, and bow down their back alway.

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

For this cause I bow my knees unto the Father of our Lord Jesus Christ,

That at the name of Jesus every knee should bow, of things in heaven, and things in earth, and things under the earth;

And I saw, and behold a white horse: and he that sat on him had a bow; and a crown was given unto him: and he went forth conquering, and to conquer.