2 Kings 6:6
And the man of God said, Where fell it? And he showed him the place. And he cut down a stick, and cast it in thither; and the iron did swim.
Nave's Topical Index—AKJV

2 Chronicles 18:10
And Zedekiah the son of Chenaanah had made him horns of iron, and said, Thus said the LORD, With these you shall push Syria until they be consumed.
Nave's Topical Index—AKJV

Ecclesiastes 10:10
If the iron be blunt, and he do not whet the edge, then must he put to more strength: but wisdom is profitable to direct.
Nave's Topical Index—AKJV

Isaiah 10:34
And he shall cut down the thickets of the forest with iron, and Lebanon shall fall by a mighty one.
Nave's Topical Index—AKJV