* Prof. Engelsma is professor of Dogmatics and Old Testament in the Theological School of the Protestant Reformed Churches. This article is the conclusion of the text of the address given at the commencement exercises of the Protestant Reformed Theological Seminary on June 16, 2003. The preceding installments appeared in the July 2003 and September 1, 2003 issues of the Standard Bearer. So when they had dined, Jesus saith to Simon Peter, Simon, son of Jonas, lovest thou me more than these? He saith unto him, Yea, Lord; thou knowest that I love thee. He saith unto him, Feed my...