My heart. There is no writing like that dictated by the heart. Heartless hymns are insults to heaven. Is inditing a good matter. A good heart will only be content with good thoughts. Where the fountain is good good streams will flow forth. The learned tell us that the word may be read overflows, or as others, boils or bubbles up, denoting the warmth of the writer's love, the fulness of his heart, and the consequent richness and glow of his utterance, as though it were the ebullition of his inmost soul, when most full of affection. We have here no single cold expression; the writer is not one who frigidly studies the elegancies and proprieties of poetry, his stanzas are the natural outburst of his soul, comparable to the boiling jets of the geysers of Hecla. As the corn offered in sacrifice was parched in the pan, so is this tribute of love hot with sincere devotion. It is a sad thing when the heart is cold with a good matter, and worse when it is warm with a bad matter, but incomparably well when a warm heart and a good matter meet together. O that we may often offer to God an acceptable minchah, a sweet oblation fresh from the pan of hearts warmed with gratitude and admiration. I speak of the things which I have made touching the King. This song has "the King" for its only subject, and for the King's honour alone was it composed, well might its writer call it a good matter. The psalmist did not write carelessly; he calls his poem his works, or things which he had made. We are not to offer to the Lord that which costs us nothing. Good material deserves good workmanship. We should well digest in our heart's affections and our mind's meditations any discourse or poem in which we speak of one so great and glorious as our Royal Lord. As our version reads it, the psalmist wrote experimentally things which he had made his own, and personally tasted and handled concerning the King. My tongue is the pen of a ready writer, not so much for rapidity, for there the tongue always has the preference, but for exactness, elaboration, deliberation, and skilfulness of expression. Seldom are the excited utterances of the mouth equal in real weight and accuracy to the verba scripta of a thoughtful accomplished penman; but here the writer, though filled with enthusiasm, speaks as correctly as a practised writer; his utterances therefore are no ephemeral sentences, but such as fall from men who sit down calmly to write for eternity. It is not always that the best of men are in such a key, and when they are they should not restrain the gush of their hallowed feelings. Such a condition of heart in a gifted mind creates that auspicious hour in which poetry pours forth her tuneful numbers to enrich the service of song in the house of the Lord.