Carl Trueman speaks about the Marburg Colloquy, a meeting called by Philip I of Hesse to unite the Protestant states in a political alliance. To accomplish such a union, he sought theological agreement between Martin Luther and Ulrich Zwingli. While Luther and Zwingli could agree on fourteen theological points laid out at the meeting, they could not come to terms on the real presence of Christ in the Lord's Supper.

Dr. Trueman is professor of biblical and religious studies at Grove City College.