In the same way, the Spirit helps us in our weakness. For we do not know how we ought to pray, but the Spirit Himself intercedes for us with groans too deep for words. — Romans 8:26
We do not even know how to pray as we ought—that is how weak we are. But the Spirit Himself intercedes for us with groanings too deep for words. He takes our fragmented, faltering prayers and presents them before the Father according to the will of God. The Comforter, the Holy Spirit, teaches us all things and works in us to will and to do. When you do not have the words, the Spirit speaks for you.