The Floating Ax Head

This passage in II Kings 6:1-7 has me really puzzled. Let me put it here and save you the trouble of looking it up:

"And the sons of the prophets said to Elisha, “See now, the place where we dwell with you is too small for us. Please, let us go to the Jordan, and let every man take a beam from there, and let us make there a place where we may dwell.” So he answered, “Go.” Then one said, “Please consent to go with your servants.” And he answered, “I will go.” So he went with them. And when they came to the Jordan, they cut down trees. But as one was cutting down a tree, the iron ax head fell into the water; and he cried out and said, “Alas, master! For it was borrowed.” So the man of God said, “Where did it fall?” And he showed him the place. So he cut off a stick, and threw it in there; and he made the iron float. Therefore he said, “Pick it up for yourself.” So he reached out his hand and took it."

Now, this is placed in between a passage about Elisha's servant, Gehazi, when he becomes greedy and manages to get leprosy as a consequence, and when the Syrian army surrounded where Elisha was, and he prayed that his servant woud see that those who were with them were more than those who were with the army. I understand that all the stories are placed in the Bible for a reason, I'm just grasping for one for this. Yes, it is a miracle that Elisha made the ax head float, but there is something more, and I just don't get it. Any ideas?