He was also one of those who attended as chaplains to the army in 1639, and 1640, and was present during the whole treaty begun at Rippon and concluded at London.----What comfort he had in these things he describes in these words, "As for myself, I never found my mind in a better temper than it was all that time, from my outset until my head was again homeward. I was one who had taken leave of the world, and resolved to die in that service. I found the favour of God shining on me, and a sweet, meek and humble, yet strong and vehement spirit leading me along." The same year 1640, he was by the covenanting lords sent to London to draw up an accusation against arch-bishop Laud, for the innovations he had obtruded upon the church of Scotland. He was translated from Kilwinning to be professor of divinity at Glasgow, when Mr. David Dickson was translated from thence to the divinity chair at Edinburgh. And he was one of those commissioners sent from the church of Scotland to the Westminster assembly _anno_ 1645, where he remained almost the whole time of that assembly. And after they rose, as an acknowledgment of his good services, the parliament of England made him a handsome present of silver plate, with an inscription, signifying it to be a token of their great respect to him, which not long since was to be seen in the house of Carnbrue, being carefully preserved, and perhaps it remains there to this day. By his first wife Lillias Fleming he had one son and four daughters, by his second wife, principal Strang's daughter he had one daughter who was married to Walkinshaw of Barrowfield.