Jeremiah 6:27

Render it:

I have set thee among My people as a prover of ore,

And thou shalt know and try their way.

They are all of them rebels of rebels (i. e., utter rebels):

Slander-walkers, were copper and iron,

Corrupters all of them.

The bellows glow: from their fire lead only!

In vain hath the smelter smelted,

And the wicked are not separated.

Refuse-silver have men called them:

For Yahweh hath refused them.

The intermixture throughout of moral words and metallurgical terms is remarkable.