Video GRN Conversations with Ligon Duncan Is Teaching Obedience Legalism? by GRN March 1, 2016 Print ViewGRN Conversations with Ligon Duncan Is Teaching Obedience Legalism? was last modified: March 10th, 2017 by GRN 0 Facebook Twitter Google + Pinterest GRN The Gospel Reformation Network exists to cultivate healthy Reformed churches in the Presbyterian Church in America. Related Articles The GRN at the PCA General Assembly GRN at General Assembly 2016 GRN Luncheon 2016