But, whatever excellencies he possessed as a preacher, Mr. Mortimer was unconscious of them himself: for he frequently deplored what he considered the inefficiency of his ministrations, and was accustomed to speak in the most humble terms of his sermons. On one such occasion, he said, “When I come out of the pulpit, and turn over in my mind what I have said, I think, What does it all amount to? How much more to the purpose it might have been, and how much more useful!”
On the Sunday evenings, after committing his past endeavours into the hands of his God by prayer, he would turn his thoughts from the review of what he considered his past failures to the hope of future usefulness, by at once renewing his exertions. With this view, he was accustomed, before he retired to rest on the Sunday evening, to look out a text for the following Sunday, and to form the outline of the sermon. But although he was thus peculiarly anxious about the preparation of his sermons, he seldom spoke on the subject without remarking upon the necessity of the accompanying influences of the Holy Spirit, to render efficacious even the most highly wrought, powerful, and most convincing sermon. Indeed, he has expressed the opinion, that the most common-place sermons were often made the most useful; because, in such cases, the preacher, being aware of their defects, and being thus divested of all feelings of self-congratulation, was led, in more humble dependence upon God, to entreat that He would give the increase.
In connexion with this subject, he once mentioned having preached for a friend on a rainy day to an exceedingly small congregation. The comparatively large number of empty pews presented a very discouraging aspect, and tended very much to depress his spirits;—altogether such was the effect produced on his mind, that least of all on that day would he have expected any favourable result from his sermon. Some time afterwards, when he was spending an evening at the house of a person who resided at some distance both from the place where he preached and from his own home, a lady, who was of the party, took an opportunity of stating how much she felt indebted to him for the spiritual sight that she had received through his instrumentality. He was at a loss to know what she alluded to, for he had no recollection of having seen her before: but she brought to his recollection the thinly scattered congregation in his friend’s church, for whom he had preached on a very rainy day: and then stated that she was one of those few hearers, and that the sermon had made so deep an impression on her mind as to have been productive of lasting benefit.