Testing ( Romans 8 v 29)

R.C.Sproul write the following'', In James 1 v 3,we read that God tempts no one. God may test, but He never tempts to evil. A test is for growth; temptation is for evil'' Testing is for growth, what does that mean?.  Malachi 3 v 3 reads ,''He will sit as a refiner and purifier of silver, he will purify  the Levites and refine them like God and silver''. The story is told of a girl who went to see silver being refined ,She asked the man refining the silver about the process, he told her he had to keep his eye continually on the silver as it may ruin the the process. She further asked him when did he know the right moment to cease, he replied,''when I can see my image in the silver''.The testing ,trials, serve that same purpose,they are like a fire that's purifying the child of God,the ultimate end of the process will be that Christ image been seen in all His children.                                                                                                                                                                                                                                                                                                             Job 3 v 10.                                                                                                                                                                                                                                                                                                   But he knows the way that I take; when                                                                                                   he has tested me, I will come forth as gold.