'Loins' in the Bible

And thou knowest also what Joab the son of Zeruiah did to me, what he did to the two captains of the hosts of Israel, to Abner the son of Ner, and to Amasa the son of Jether, whom he slew, and shed the blood of war in peace, and put the blood of war upon his girdle that was about his loins, and upon his sandals that were on his feet.

nevertheless thou shalt not build the house; but thy son that shall come forth out of thy loins, he shall build the house unto my name.

And the young men that had grown up with him spoke to him saying, Thus shalt thou say to this people that have spoken to thee saying, Thy father made our yoke heavy, and lighten thou it for us, thus shalt thou say to them: My little finger is thicker than my father's loins;

And the hand of Jehovah was upon Elijah; and he girded up his loins, and ran before Ahab to the entrance of Jizreel.

And his servants said to him, Behold now, we have heard that the kings of the house of Israel are merciful kings: let us, I pray thee, put sackcloth on our loins, and ropes upon our heads, and go out to the king of Israel; perhaps he will save thy life.

And they girded sackcloth on their loins, and ropes on their heads, and came to the king of Israel, and said, Thy servant Ben-Hadad says, I pray thee, let me live. And he said, Is he yet alive? he is my brother.