Dr. Poythress earned a B.S. in mathematics from California Institute of Technology (1966) and a Ph.D. in mathematics from Harvard University (1970). After teaching mathematics for a year at Fresno State College (now California State University at Fresno), he became a student at Westminster Theological Seminary, where he earned an M.Div. (1974) and a Th.M. in apologetics (1974). He received an M.Litt. in New Testament from University of Cambridge (1977) and a Th.D. in New Testament from the University of Stellenbosch, Stellenbosch, South Africa (1981).
He has been teaching in New Testament at Westminster Theological Seminary in Philadelphia since 1976. In 1981 he was ordained as a teaching elder in the Reformed Presbyterian Church Evangelical Synod, which has now merged with the Presbyterian Church in America.
More information about his teaching at Westminster can be found at the Westminster Seminary website.
Dr. Poythress studied linguistics and Bible translation at the Summer Institute of Linguistics in Norman Oklahoma in 1971 and 1972, and taught linguistics at the Summer Institute of Linguistics in the summers of 1974, 1975, and 1977. He has published books on Christian philosophy of science, theological method, dispensationalism, biblical law, hermeneutics, Bible translation, and Revelation. A list of publications is found on Dr. Poythress' website.
Dr. Poythress married his wife Diane in 1983, and they have two children. Dr. Poythress has side interests in science fiction, string figures, volleyball, and computers.