Greg Bahnsen

Due to his lifelong medical problems, Bahnsen had to undergo a third aortic valve implant surgery on December 5, 1995. After the completion of the operation, serious complications developed within twenty-four hours. He then became comatose for several days and died on December 11, 1995, at the age of 47.

In 1994 a controversy emerged after atheist philosopher Michael Martin was informed three weeks before a scheduled debate with Bahnsen "that Bahnsen would not debate unless Martin gave written permission to SCCCS to tape the debate" for resale to support SCCCS. Martin refused because "he did not want SCCCS to profit from his participation", while SCCCS refused to let Bahnsen debate without the debate being taped. The debate was canceled. Since that time Martin has responded to Bahnsen's use of TAG, doing so in his own debates with Michael Butler, John Frame, and Douglas Jones, and has published his "Transcendental Argument for the Non-Existence of God" in the journal of the New Zealand Association of Rationalists and Humanists, as well as in essays posted on the Secular Web.

In 1970 Bahnsen graduated magna cum laude from Westmont College, receiving his B.A. in philosophy as well as the John Bunyan Smith Award for his overall grade point average. From there he went on to Westminster Theological Seminary in Philadelphia, where he studied under Cornelius Van Til. The two became close friends. When he graduated in May 1973, he simultaneously received two degrees, Master of Divinity and Master of Theology, as well as the William Benton Greene Prize in apologetics and a Richard Weaver Fellowship from the Intercollegiate Studies Institute. His next academic stop was the University of Southern California (USC), where he studied philosophy, specializing in the theory of knowledge. In 1975, after receiving ordination in the Orthodox Presbyterian Church, he became an associate professor of Apologetics and Ethics at Reformed Theological Seminary (RTS) in Jackson, Mississippi. While there, he completed his studies at USC, receiving his Ph.D. in 1978. Bahnsen's four years at RTS were fraught with contention, centered around his particular version of theonomic postmillennialism.

Greg L. Bahnsen (September 17, 1948 – December 11, 1995) was an American Reformed philosopher, apologist, and debater. He was a minister in the Orthodox Presbyterian Church and a full-time Scholar in Residence for the Southern California Center for Christian Studies (SCCCS). He is also considered a contributor to the field of Christian apologetics, as he popularized the presuppositional method of Cornelius Van Til. He is the father of David L. Bahnsen, an American portfolio manager, author, and television commentator.

One of the original pillars of Christian Reconstruction, Bahnsen was a leading proponent of theonomy, postmillennialism, and presuppositional apologetics. He lectured to a broad range of evangelical Christian groups at many colleges and conferences, not only throughout the United States, but in Scotland and Russia. He published over 1700 audio tapes, videos, articles, and books.