Peter A. Lillback is an American theologian who serves as President and Professor of Historical Theology and Church History at Westminster Theological Seminary in Pennsylvania. He is also President of the Providence Forum and a senior editor at Unio cum Christo. Ordained in the Orthodox Presbyterian Church, he holds credentials as a teaching elder in the Presbyterian Church in America. Lillback earned degrees from Cedarville University, Dallas Theological Seminary, and Westminster Theological Seminary. He is the author of George Washington’s Sacred Fire.