'Staff' in the Bible

And there was given to me a reed like a staff, saying, Rise, and measure the temple of God, and the altar, and them that worship in it.

And she gave birth to a Son, a male Child, who is destined to rule (shepherd) all the nations with a rod of iron; and her Child was caught up to God and to His throne.

From His mouth comes a sharp sword (His word) with which He may strike down the nations, and He will rule them with a rod of iron; and He will tread the wine press of the fierce wrath of God, the Almighty [in judgment of the rebellious world].