Intercession of the Spirit
In the same way, the Spirit helps us in our weakness. We do not know what we ought to pray for, but the Spirit himself intercedes for us through wordless groans. And he who searches our hearts knows the mind of the Spirit, because the Spirit intercedes for God's people in accordance with the will of God.
There have been different theological interpretations of the intercession of the Spirit. John Calvin taught that it refers to the "teaching ministry of the Spirit" which instructs believers what to pray for and what to ask for in their prayers. On the other hand, Abraham Kuyper viewed the activity of the Spirit as separate and distinct from the efforts of the believers who pray.