It is the work of the refiner to carefully apply the heat based upon the quality of the metal - for the purer the ore, the greater the heat that can be applied. God will never use impure metal. Because the metal that cannot pass the test of refinement has no value for service. I pray for you that God will give you the needed grace to endure His refining process, and your glory will shine for the world to see. 1 Corinthians 10 v 13.