OT-LAW.filter - rsv instrument:

rsv@Genesis:4:22 @ Zillah bore Tubal-cain; he was the forger of all instruments of bronze and iron. The sister of Tubal-cain was Na'amah.

rsv@Numbers:35:16 @ "But if he struck him down with an instrument of iron, so that he died, he is a murderer; the murderer shall be put to death.