Charles H. Spurgeon on Psalms 63:5

My soul shall be satisfied as with marrow and fatness. Though unable to feast on the sacrifice at thine altar, my soul shall even here be filled with spiritual joys, and shall possess a complete, a double contentment. There is in the love of God a richness, a sumptuousness, a fulness of soul filling joy, comparable to the richest food with which the body can be nourished. The Hebrews were more fond of fat than we are, and their highest idea of festive provision is embodied in the two words, marrow and fatness: a soul hopeful in God and full of his favour is thus represented as feeding upon the best of the best, the dainties of a royal banquet. And my mouth shall praise thee with joyful lips. More joy, more praise. When the mouth is full of mercy, is should also be full of thanksgiving. When God gives us the marrow of his love, we must present to him the marrow of our hearts. Vocal praise should be rendered to God as well as mental adoration; others see our mercies, let them also hear our thanks.