'Bow' in the Bible

He may go in flight from the iron spear, but the arrow from the bow of brass will go through him;

My glory will be ever new, and my bow will be readily bent in my hand.

For he has made loose the cord of my bow, and put me to shame; he has sent down my flag to the earth before me.

The bow is sounding against him; he sees the shining point of spear and arrow.