Samuel Wylie Crawford was born on October 14, 1792, in the Chester District of South Carolina. He was born of good Scottish stock, but was orphaned at a young age, and was looked after by his uncle Dr. Samuel Wylie. Crawford initially studied medicine, but then settled on the study of theology. He was ordained by the Northern Presbytery of the Reformed Presbyterian Church and was installed as a pastor in Chambersburg, Pennsylvania. This sermon comes to us from that congregation. It is a remarkably helpful sermon today just as it was in yesteryear. Crawford opens with the text Amos 3:3 “Can two walk together lest they be agreed?” He uses this as the touchstone for a wonderful doctrinal sermon. He explored the basis of Ecclesiastical relations, the significance of having creeds and confessions, as well as the problems with fellowships that do not have them. Overall this sermon is as helpful today as it was the day it was preached.