Ingo Sorke : " Lessons from the red and green light"

"The fact that we are called upon to endure trial shows that the Lord Jesus sees in us something precious which He desires to develop. If He saw in us nothing whereby He might glorify His name, He would not spend time in refining us. He does not cast worthless stones into His furnace. It is valuable ore that He refines. The blacksmith puts the iron and steel into the fire that he may know what manner of metal they are. The Lord allows His chosen ones to be placed in the furnace of affliction to prove what temper they are of and whether they can be fashioned for His work." Help In Daily Living, 8