Iron: First Recorded Use of Used in the Temple
Source: Nav
1 Chronicles 22:3
David provided a large quantity of iron to make the nails for the doors of the gateways and for the fittings, together with more bronze than could be weighed
1 Chronicles 29:2, 7
Now with all my ability I have made provision for the house of my God—gold for the gold articles, silver for the silver, bronze for the bronze, iron for the iron, and wood for the wood, as well as onyx for the settings, turquoise, stones of various colors, all kinds of precious stones, and slabs of marble—all in abundance. / Toward the service of God’s house they gave 5,000 talents and 10,000 darics of gold, 10,000 talents of silver, 18,000 talents of bronze, and 100,000 talents of iron.