Rom. 8:26--"Likewise the Spirit also helpeth our infirmities: for
we know not what we should pray for as we ought: but the Spirit
himself maketh intercession for us with groanings which cannot be
uttered." See also Jude 20. The thought is this: Even though we
are assured that there is a personal God to hear us, and although
we have the confidence that the barrier of sin which stood between
us and God has been removed, so that we now desire to pray, we often
are hindered because we either do not know what to say or what to
ask for. We may ask too ardently for wrong things, or too languidly
for the things we most need. And so we are afraid to pray. The
assurance that this verse gives us is that the Holy Spirit will pray
within us, and will indict the petition, helping us in our prayer
life.