Zillah also had a son, Tubal-Cain, who forged all kinds of tools out of bronze and iron. Tubal-Cain’s sister was Naamah.

If you make an altar of stones for me, do not build it with dressed stones, for you will defile it if you use a tool on it.

He took what they handed him and made it into an idol cast in the shape of a calf, fashioning it with a tool. Then they said, “These are your gods, Israel, who brought you up out of Egypt.”

Build there an altar to the Lord your God, an altar of stones. Do not use any iron tool on them.

as Moses the servant of the Lord had commanded the Israelites. He built it according to what is written in the Book of the Law of Moses—an altar of uncut stones, on which no iron tool had been used. On it they offered to the Lord burnt offerings and sacrificed fellowship offerings.

Whoever touches thorns uses a tool of iron or the shaft of a spear; they are burned up where they lie.”

In building the temple, only blocks dressed at the quarry were used, and no hammer, chisel or any other iron tool was heard at the temple site while it was being built.

that they were inscribed with an iron tool on lead, or engraved in rock forever!

The blacksmith takes a tool and works with it in the coals; he shapes an idol with hammers, he forges it with the might of his arm. He gets hungry and loses his strength; he drinks no water and grows faint.

“Judah’s sin is engraved with an iron tool, inscribed with a flint point, on the tablets of their hearts and on the horns of their altars.