There was a group of women in a Bible Study on the book of Malachi. As they were studying chapter three, they came across verse three, which says:
"He will sit as a refiner and purifier of silver".
  This verse puzzled the  women and they wondered what this statement meant about the  character and nature of God. One of the women offered to find out  the process of refining silver and get back to the group at their next Bible Study.
That week, this woman called up a silversmith and  made an appointment to watch him at work.  She didn't  mention anything about the reason for her interest beyond her curiosity
about the process of refining silver. As she  watched the silversmith, he held a piece of silver over the fire and  let it heat up. He explained that in refining silver, one needed to  hold the silver in the middle of the fire where the flames were hottest as to burn away all the impurities. The woman thought about God holding us in such a hot spot then  she thought again about the verse, that "He sits as a refiner and  purifier of silver."
She asked the silversmith if it was true that he had to sit there in front of the fire the whole time the silver was  being refined. The man answered that yes, he not only had to sit  there holding the silver, but he had to keep his eyes on the silver the entire time it was in the fire. If the silver was left a moment too long in the flames, it would be destroyed.
The woman was silent for a moment. Then she asked the silversmith "But how do
you know when the silver is fully refined?"
He  smiled at her and answered,  "Oh, that's easy - when I see my  image in it."

If today you are feeling the heat of the fire, remember that God has  His
eye on you and will keep watching you until He sees His image  in you.