We have all heard of the Italian violin maker, Stradivarius. His violins are now the most prized violins ever made because of the rich and resonating sound they produce. The unique sound of a Stradivarius violin cannot be duplicated. Now what may surprise you is these precious instruments were not made from treasured pieces of wood; they were carved from discarded lumber. Stradivarius was very poor, and could not afford fine materials like his contemporaries. So he got most of his wood from the dirty harbors where he lived. He would take those waterlogged pieces of wood to his shop and clean them up, dry them out, and from those trashed pieces of lumber he would create instruments of rare beauty.
It has since been discovered that while that wood floated in those dirty harbors, microbes went into the wood and ate out the center of those cells. This left just a fibrous infrastructure of the wood that created resonating chambers for the music. From wood that nobody wanted, Stradivarius produced violins that now everybody wants. Just as this poor violin maker transformed trash into treasure, only God can transform a sinner into a saint. Only God can take us from being worthless to make us worthy of heaven itself.
You see, God can do what even the farmer in the parable could not do. The farmer cannot turn a weed into wheat, but God can turn a sinner into a saint.