A preacher whose heart is a barometer of the spiritual condition of his people has no difficulty in finding subjects and texts for his sermons. If the needs of his people press upon him, those needs furnish an arc light that illuminates the Bible, and a suggestiveness that brings him an embarrassment of homiletical riches. Given a clear recognition of a definite immediate need and the consequent definite purpose, it will not only make sermonizing easy but will control the rest of the service. Not the theme of the sermon, but the purpose of the service as a whole, will be the organizing vitality. II. SUGGESTIVE SELECTIONS OF HYMNS Here is an earnest pastor who is impressed with the growing materialism, or worldliness, of his people. How shall be best dredge the stagnant shallows of their souls? He decides, not upon a single sermon, but upon a series of services with cumulative power, whose whole outlook shall be upon the Person and Character of God as the basis of his claims upon his creatures. There will be sermons upon these high themes of course, but they will call for noble and elevated co-ordinate co-operation in the rest of the service. Now these sermons should all be peculiarly worshipful, but that worship will be set to different keys. _Hymns for Service on God’s Omnipotence._ The sermon on the Divine Omnipotence calls for a noble enthusiasm. The hymns should be majestic and joyful. After profoundly worshipful preliminary exercises it will not be wise to sing Watts’ hymn, “Let all the earth their voices raise, To sing the great Jehovah’s praise, And bless His holy name,” to the tune “Ariel” for the first hymn in spite of its appropriateness of thought: first, because it is not sufficiently elevated, and secondly, because the tune is too light. Watts’ more majestic hymn, “Before Jehovah’s awful throne, Ye nations bow with sacred joy,” sung to “Old Hundredth,” would be more harmonious with the general purpose of the service. By the time the second hymn is reached there must be some exhilaration of spirit. It will not be desirable therefore to select “All people that on earth do dwell, Sing to the Lord with cheerful voice”; first, because it is in exactly the same key of feeling as the previous hymn; second, because for that reason no tune is quite so fitting to it as “Old Hundredth,” which is already provided for; and third, because the presumable intensifying of feeling by this time calls for a brighter text and more spirited music. But it must be a hymn of worship, none the less; we choose, therefore, “Oh, worship the King, all-glorious above; Oh, gratefully sing His power and His love,” the interrupted dactylic measure and triple time tune giving both dignity and movement.