But, whilst his hands were full of all kinds of business enterprises, Dr. Robison found abundant leisure for a different kind of occupation. He was an intimate friend and associate of Alexander Campbell, the leader of the Disciple movement, and organized a congregation of this faith in Bedford, which he preached to for sixteen years. When he commenced his ministerial labors in Bedford, (from whom, at no time, did he receive fee or reward,) his congregation numbered less than a dozen, but when he closed his term of service as a voluntary minister he left for his successor a congregation numbering four hundred and forty, showing conclusively that his ministering had not been in vain. Nor was his zeal for the faith as understood by the Disciples content with preaching during this long term of service. His purse was always ready for the calls of the church, and, in company with Alexander Campbell, he traveled from place to place throughout a great part of Ohio, addressing the vast concourses called together by the fame of the Disciple leader, then in the plenitude of his power and influence as a preacher and teacher. In these gatherings and in such company Dr. Robison enriched his mind and developed a great talent for extemporaneous address and discussion. Of a positive nature he brought strong earnestness and unflagging energy to the work in which he was engaged, and carried his hearers with him, as he himself was frequently borne away by the enthusiasm of his subject. The same earnestness and energy which made him so successful as a preacher served to make him popular and effective on the political platform, and in the cause of the soldiers of the Union in recent years. During the war he was active in procuring volunteers for the Union army, and whenever an effort was made to aid the cause of the Union Dr. Robison was among the foremost in the work. In politics Dr. Robison was an old Clay Whig. After the demolition of that party he voted with the Democrats. In 1861, he was chosen to the State Senate by the union of the War Democrats and Republicans, receiving the largest vote for any senator from this county. Since that time he has voted with the Republican party. His Senatorial career was highly honorable to himself and of value to his constituents, who found in him a faithful, active and intelligent representative.