His conversion to the Lord was very remarkable. For going with his lady to visit her mother in the parish of Abercorn, some miles west from Edinburgh,--it happened, that at this time the sacrament was to be administered in that parish upon Saturday,--his mother-in-law earnestly pressed them to go with them to church and hear sermon; at first he shewed much unwillingness, but partly by their persuasion, and partly by his complaisant disposition, he went along with them. The minister that preached that day was extremely affectionate and serious in his delivery, and though the sermon was a plain familiar discourse, yet his seriousness fixed Mr. Durham's attention very closely, and he was much affected therewith. But the change was reserved till the morrow. When he came home, he said to his mother-in-law, The minister hath preached very seriously this day, I shall not need to be pressed to go to church to-morrow. Accordingly on Sabbath morning, rising early, he went to church, where Mr. Melvil preached from 2 Pet. ii. 7. _To you that believe he is precious_, &c. where he so sweetly and seriously opened up the preciousness of Christ, and the Spirit of God wrought so effectually upon his spirit, that in hearing of this sermon, he first closed with Christ, and then went to the Lord's table, and took the seal of God's covenant. After this he ordinarily called Mr. Melvil father when he spoke of him. Afterward he made serious religion his business both in secret and in his family, and in all places and companies where he came, and did cordially embrace the interest of Christ and his church as then established, and gave himself much up to reading; for which reason, that he might be free of all disturbance, &c. he caused build a study for himself; in which little chamber, he gave himself to prayer, reading and meditation, and was so close a student there, that he often forgot to eat his bread, being sometimes so intent upon his studies, that servants who were sent to call him down, often returned without answer, yea, his lady frequently called on him with tears, before he would come:--Such sweet communion he had with the Lord sometimes in that place.