Jeremiah 9:7

And I will turn my hand upon thee, and purely purge away thy dross, and take away all thy tin:

I have set thee for a tower and a fortress among my people, that thou mayest know and try their way.

Behold, I have refined thee, but not with silver; I have chosen thee in the furnace of affliction.

And he shall sit as a refiner and purifier of silver: and he shall purify the sons of Levi, and purge them as gold and silver, that they may offer unto the LORD an offering in righteousness.

And I will bring the third part through the fire, and will refine them as silver is refined, and will try them as gold is tried: they shall call on my name, and I will hear them: I will say, It is my people: and they shall say, The LORD is my God.

Beloved, think it not strange concerning the fiery trial which is to try you, as though some strange thing happened unto you:

That the trial of your faith, being much more precious than of gold that perisheth, though it be tried with fire, might be found unto praise and honour and glory at the appearing of Jesus Christ:

Is Ephraim my dear son? is he a pleasant child? for since I spake against him, I do earnestly remember him still: therefore my bowels are troubled for him; I will surely have mercy upon him, saith the LORD.

And the LORD God of their fathers sent to them by his messengers, rising up betimes, and sending; because he had compassion on his people, and on his dwelling place: