Sam Shamounian is a well known Christian Apologist. He has Assyrian Christian background and had a debate on Limited Atonement with Matt. As I understand it, Sam's position runs along the lines that Christ died for the sins of mankind in general. Sam's position takes Calvinism to mean that God only died for the elect. I don't know what denomination Sam belongs to. In Facebook comments on Matt's radio, someone said he was moving toward Orthodoxy.