Charles H. Spurgeon on Psalms 116:16

The man of God in paying his vows rededicates himself unto God; the offering which he brings is himself, as he cries, O LORD, truly I am thy servant, rightfully, really, heartily, constantly, I own that I am thine, for thou hast delivered and redeemed me. I am thy servant, and the son of thine handmaid, a servant born in thy house, born of a servant and so born a servant, and therefore doubly thine. My mother was thine handmaid, and I, her son, confess that I am altogether thine by claims arising out of my birth. O that children of godly parents would thus judge; but, alas, there are many who are the sons of the Lord's handmaids, but they are not themselves his servants. They give sad proof that grace does not run in the blood. David's mother was evidently a gracious woman, and he is glad to remember that fact, and to see in it a fresh obligation to devote himself to God. Thou hast loosed my bonds, freedom from bondage binds me to thy service. He who is loosed from the bonds of sin, death, and hell should rejoice to wear the easy yoke of the great Deliverer. Note how the sweet singer delights to dwell upon his belonging to the Lord; it is evidently his glory, a thing of which he is proud, a matter which causes him intense satisfaction. Verily, it ought to create rapture in our souls if we are able to call Jesus Master, and are acknowledged by him as his servants.