'Rod' in the Bible

and he shall shepherd them with an iron rod; as vessels of pottery are they broken in pieces, as I also have received from my Father;

And she brought forth a male son, who shall shepherd all the nations with an iron rod; and her child was caught up to God and to his throne.

And out of his mouth goes a sharp two-edged sword, that with it he might smite the nations; and he shall shepherd them with an iron rod; and he treads the wine-press of the fury of the wrath of God the Almighty.