Every branch that beareth fruit, he trimmeth it.
He is like a refiner's fire, and like fullers' soap: 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 to the LORD an offering in righteousness.
We glory in tribulations also: knowing that tribulation worketh patience; and patience, experience; and experience, hope: and hope maketh not ashamed; because the love of God is shed abroad in our hearts by the Holy Spirit which is given to us.--If ye endure chastening, God dealeth with you as with sons; for what son is he whom the father chasteneth not? But if ye are without chastisement, of which all are partakers, then are ye bastards, and not sons. Now no chastening for the present seemeth to be joyous, but grievous: nevertheless afterward it yieldeth the peaceable fruit of righteousness to them who are exercised by it. Wherefore lift up the hands which hang down, and the feeble knees.
JOHN 15:2. Mal 3:2,3. Ro 5:3-5. Heb 12:7,8, 11,12.