Romans 8:26-27

26God's Spirit also helps us to do this. Because we are weak, we do not know how we ought to pray. But God's Spirit himself prays for us. He cries to God on our behalf in a way that nobody could say with words.

27God sees deep inside us, and he knows our thoughts. He understands what is in the mind of his Spirit. When the Holy Spirit prays on behalf of God's people, he prays as God wants him to pray.