Charles H. Spurgeon on Psalms 116:16

O Lord, I am thy servant, by a double right; (and, oh, that I could do thee double service;)as thou art the Lord of my life, and I am the son of thy handmaid: not of Hagar, but of Sarah; not of the bondwoman, but of the free; and therefore I serve thee not in fear, but in love; or therefore in fear, because in love: and then is service best done when it is done in love. In love indeed I am bound to serve thee, for, Thou hast loosed my bonds; the bonds of death which compassed me about, by delivering me from a dangerous sickness, and restoring me to health: or in a higher kind; thou hast loosed my bonds by freeing me from being a captive to be a servant; and which is more, from being a servant to be a son: and more than this, from being a son of thy handmaid, to be a son of thyself. Sir Richard Baker.