Jeremiah 1:16-18

16 And I will utter my judgments against them touching all their wickedness, who have forsaken me, and have burned incense to other gods, and worshipped the works of their own hands.

17 You therefore gird up your loins, and arise, and speak to them all that I command you: be not dismayed at their faces, lest I confound you before them.

18 For, behold, I have made you this day a defended city, and an iron pillar, and brazen walls against the whole land, against the kings of Judah, against the princes thereof, against the priests thereof, and against the people of the land.