“I am the vine; you are the branches. Whoever abides in me and I in him, he it is that bears much fruit, for apart from me you can do nothing.” (John 15:5)
Suppose you are totally paralyzed and can do nothing for yourself but talk. And suppose a strong and reliable friend promised to live with you and do whatever you needed done. How could you glorify this friend if a stranger came to see you?
Would you glorify his generosity and strength by trying to get out of bed and carry him? No! You would say, “Friend, please come lift me up, and would you put a pillow behind me so I can look at my guest? And would you please put my glasses on for me?”
And so your visitor would learn from your requests that you are helpless and that your friend is strong and kind. You glorify your friend by needing him, and by asking him for help, and counting on him.
In John 15:5, Jesus says, “Apart from me you can do nothing.” So we really are paralyzed. Without Christ, we are capable of no Christ-exalting good. As Paul says in Romans 7:18, “Nothing good dwells in me, that is, in my flesh.”
But John 15:5 also says that God does intend for us to do much Christ-exalting good, namely bear fruit: “Whoever abides in me and I in him, he it is that bears much fruit.” So as our strong and reliable friend — “I have called you friends” (John 15:15) — he promises to do for us, and through us, what we can’t do for ourselves.
How then do we glorify him? Jesus gives the answer in John 15:7: “If you abide in me, and my words abide in you, ask whatever you wish, and it will be done for you.” We pray! We ask God to do for us through Christ what we can’t do for ourselves — bear fruit.
John 15:8 gives the result: “By this my Father is glorified, that you bear much fruit.”
So how is God glorified by prayer? Prayer is the open admission that without Christ we can do nothing. And prayer is the turning away from ourselves to God in the confidence that he will provide the help we need.