Henry Martyn, Journals and Letters of the Rev. Henry Martyn, B.D., ed. Samuel Wilberforce (London, 1837), Journal entry, 1805, p. 243

In the evening was preparing some sermons for to-morrow. Oh that I may, according to my prayer, never trifle with the awful work of addressing men's souls, nor preach the grace of the gospel only to excite a transient pl…