Charles H. Spurgeon on Psalms 119:76

Thy word unto thy servant. Here we may use the eunuch's question: "Of whom speaketh the prophet this, of himself or of some other man?" Of himself questionless, under the denomination of God's servant. But then the question returneth, Is it a word of promise made to himself in particular, or to God's servants in the general? Some say the former, the promises brought to him by Nathan. I incline to the latter, and it teacheth us these three truths:

First. That God's servants only are capable of the sweet effects of his mercy and the comforts of his promises. Who are God's servants? (1.) Such as own his right and are sensible of his interest in them: "God, whose I am, and whom I serve" (Acts 28:23). (2.) Such as give up themselves to him, renouncing all other masters. Renounce we must, for we were once under another master (Romans 6:17 Matthew 6:24 Romans 6:13 1Ch 30:8). (3.) Such as accordingly frame themselves to do his work sincerely: "serve with my spirit" (Romans 1:9); and, "in newness of spirit" (Romans 7:6), even as becomes those who are renewed by the Spirit: diligently (Acts 26:7), and universally (Luke 1:74-75), and wait upon him for grace to do so (Hebrews 7:28). These are capable of comfort. The book of God speaketh no comfort to persons that live in sin, but to God's servants, such as do not live as if they were at their own disposal, but at God's beck. If he say go, they go. They give up themselves to be and do what God will have them to be and do.

Secondly. If we have the benefit of the promise, we must thrust in ourselves under one title or other among those to whom the promise is made; if not as God's children, yet as God's servants. Then the promise is as sure to us as if our name were in it.

Thirdly. All God's servants have common grounds of comfort: every one of God's servants may plead with God as David doth. The comforts of the word are the common portion of God's people. Thomas Manton.