2 Kings 6:6
And the man of God said, Where fell it? And he shewed him the place. And he cut down a stick, and cast it in thither; and the iron did swim.
Cross-reference
2 Kings 2:21
Parallel
2 Kings 2:21 records Elisha throwing salt into water to heal it—a parallel miracle of casting something into water to change its nature.
2 Kings 8:4
Historical context
In 2 Kings 8:4, the king asks Gehazi to recount Elisha's great deeds — this floating axe head is one such miracle in the same narrative.
Exodus 15:25
Typology
In Exodus 15:25, Moses uses a tree to sweeten bitter water — here Elisha uses a stick to make iron float. Both prophets transform water with wood.