To all these elements of human nature, then, the preacher will address himself. He will do more:--He will study times and seasons and events, for times and seasons and events often produce moods which infect a whole people. We have examples of this in the moral influence of the festivals of the Christian year. They were wise men who, for all futurity, connected with certain dates the outstanding events of the sacred history, the memory of great saints, confessors and martyrs. Probably we of the Nonconformist pulpits might here learn a lesson in homiletic tactics from our friends of the Roman and Anglican churches. There should only be one subject for Good Friday; one for Easter morn; one for Christmastide; one for the hour wherein the old year dies. It is not merely a tribute to convention to observe these seasons. It is strategically wise to do so. The preacher should use Whitsun as an opportunity of leading the Church to prayer for new pentecosts; harvest time to stir the slumbering thankfulness of men. He who neglects these ready-made chances throws away precious advantage for his appeal and misses the psychological moment. So much for the seasons and their memories. We have experience, also, of the way in which the watchful and tactful preacher will profit from the occurrences of his time. In the events of the day much material for the pointing of appeal may often be found. The calamities which befall; the happenings which arrest the attention of the multitude and often hush a whole nation with the hush of awe--he will find in these things an opening to be entered on behalf of the enterprise he has in hand. Very watchful must he be, for everything that touches the heart may mean "a way in" which it were a misfortune to miss. He must look for the very slightest change of mood in his people, for so his long-hoped-for chance may come. With all he may do; after every plea he may still find that the victory is unwon. He has gained the intellect it may be or moved the heart; but the stubborn will still holds out against him.