The Reformed Presbyterian Church of Scotland, in which I had been brought up, had been advertising for another Missionary to join the Rev. John Inglis in his grand work in the New Hebrides. Dr. Bates, the excellent convener of the Heathen Missions Committee, was deeply grieved, because for two years their appeal had failed. At length, the Synod, after much prayer and consultation, felt the claims of the Heathen so urgently pressed upon them by the Lord’s repeated calls, that they resolved to cast lots, to discover whether God would thus select any Minister to be relieved from his home-charge, and designated as a Missionary to the South Seas. Each member of Synod, as I was informed, agreed to hand in, after solemn appeal to God, the names of the three best qualified in his esteem for such a work, and he who had the clear majority was to be loosed from his congregation, and to proceed to the Mission field—or the first and second highest, if two could be secured. Hearing this debate, and feeling an intense interest in these most unusual proceedings, I remember yet the hushed solemnity of the prayer before the names were handed in. I remember the strained silence that held the Assembly while the scrutinizers retired to examine the papers; and I remember how tears blinded my eyes when they returned to announce that the result was so indecisive, that it was clear that the Lord had not in that way provided a Missionary. The cause was once again solemnly laid before God in prayer, and a cloud of sadness appeared to fall over all the Synod. The Lord kept saying within me, “Since none better qualified can be got, rise and offer yourself!” Almost overpowering was the impulse to answer aloud, “Here am I, send me.” But I was dreadfully afraid of mistaking my own emotions for the will of God. So I resolved to make it a subject of close deliberation and prayer for a few days longer, and to look at the proposal from every possible aspect. Besides, I was keenly solicitous about the effect upon the hundreds of young people and others, now attached to all my classes and meetings; and yet I felt a growing assurance that this was the call of God to His servant, and that He who was willing to employ me in the work abroad, was both able and willing to provide for the on-carrying of my work at home. The wail and the claims of the Heathen were constantly sounding in my ears. I saw them perishing for lack of the knowledge of the true God and His Son Jesus, while my Green Street people had the open Bible, and all the means of grace within easy reach, which, if they rejected, they did so wilfully, and at their own peril. None seemed prepared for the Heathen field; many were capable and ready for the Calton service. My medical studies, as well as my literary and divinity training, had specially qualified me in some ways for the Foreign field, and from every aspect at which I could look the whole facts in the face, the voice within me sounded like a voice from God.