HarperCollins Christian Publishing recognizes two Christian Fiction authors  Authors Terri Blackstock (Zondervan) and Colleen Coble (Thomas Nelson) are among the top-selling and most widely recognized names in Christian Fiction.  Their commitment to inspire readers through story-telling has landed them both on multiple bestsellers lists with a fan base that stretches the globe. Blackstock recently celebrated 20-years as a Zondervan author, and over four million copies of her Zondervan novels have now been sold. Coble has been a Thomas Nelson author…