Does anyone know why Gordon Clark did not join with the PCA when it was formed? What "doctrinal grounds" was Robbins referring to? An excerpt from The Trinity Review, "An Introduction to Gordon H. Clark", July-August, 1993: Clark entered the United Presbyterian Church -- not the large denomination, which was not called the United Presbyterian Church at that time – but a small, more conservative, denomination. There he fought another battle about both doctrine and church property. When the United Presbyterian denomination joined the mainline church in the 1950s, Clark left that church and joined the Reformed Presbyterian Church, which later merged with the Evangelical Synod to form the Reformed Presbyterian Church, Evangelical Synod. He remained a part of that Church until it merged with the Presbyterian Church in America in 1983. Clark refused to join the Presbyterian Church in America on doctrinal grounds, and for about a year he was the RPCES. Some months before his death in April 1985 he affiliated with Covenant Presbytery. Reference came up on Wikipedia too.