Phrases like Worship Service or Service of Worship are tautologies. To worship God means to serve him. Basically there are two ways to do it. One way is to do things for Him that He needs to have done - run errands for Him, carry messages for Him, fight on His side, feed His lambs, and so on. The other way is to do things for Him that you need to do - sing songs for Him, tell Him what's on your mind and in your heart, in general rejoice in Him.
Frederick BuechnerAnd now brothers, I will ask you a terrible question, and God knows I ask it also of myself. Is the truth beyond all truths, beyond the stars, just this: that to live without him is the real death, that to die with him the only life?
Frederick BuechnerBecoming a Christian was terribly helpful to me. I can't imagine finding my way without it. I think it can be very crucially important to ally yourself with some religion.
Frederick Buechner