Jeremiah 1:18 in the King James Version
For, behold, I have made thee this day a defenced city, and an iron pillar, and brasen 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.
Context
17 “You therefore put your belt on your waist, arise, and say to them all that I command you. Don’t be dismayed at them, lest I dismay you before them.
18 For behold, I have made you today a fortified city, an iron pillar, and bronze walls against the whole land—against the kings of Judah, against its princes, against its priests, and against the people of the land.
19 They will fight against you, but they will not prevail against you; for I am with you”, says the LORD, “to rescue you.”