And I looked up and saw four horns.
References for Zechariah 1:18
I asked the angel who talked with me, "What are these?" And he answered me, "These are the horns that have scattered Judah, Israel, and Jerusalem."
Then the Lord showed me four blacksmiths.
And I asked, "What are they coming to do?" He answered, "These are the horns that scattered Judah, so that no head could be raised; but these have come to terrify them, to strike down the horns of the nations that lifted up their horns against the land of Judah to scatter its people."
References for Zechariah 1:21