'Bending' in the Bible

Thy words have upholden him that was stumbling, and thou hast braced up the bending knees:

And the children of them that afflicted thee shall come bending unto thee; and all they that despised thee shall bow themselves down at the soles of thy feet; and they shall call thee The city of Jehovah, the Zion of the Holy One of Israel.

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