Jeremiah 6:29 YLT

²⁷  A watch-tower I have given thee, Among My people a fortress, And thou knowest, and hast tried their way.

²⁸  All of them are turned aside by apostates, Walking slanderously -- brass and iron, All of them are corrupters.

²⁹  The bellows have been burnt, By fire hath the lead been consumed, In vain hath a refiner refined, And the wicked have not been drawn away.

³⁰  'Silver rejected,' they have called to them, For Jehovah hath kicked against them!