Stephen is often put on the back burner of prominent Biblical characters.  Stephen was the great evangelist between the Apostles (notably Peter) and Paul in the book of Acts.  Stephen's love for the Lord and courageously giving the Gospel was attributed to the power invested in his life by the Holy Spirit and that he was a man known as being full of faith, grace and the Spirit.  This man powerfully used of God was so transformed by God that when his accusers looked at him they saw the face of an angel.