"In the same way, the Spirit too comes to the aid of our weakness; for we do not know how to pray as we ought, but the Spirit itself intercedes with inexpressible groanings. And the one who searches hearts knows what is the intention of the Spirit, because it intercedes for the holy ones according to God’s will." (Romans 8:26-27)

One of the ways that the Holy Spirit fulfills Jesus' promise that he will not leave us orphans, is that we have many intercessors before the throne of God, including the Holy Spirit. Jesus intercedes for us. Mary and the Saints intercede for us. Wow! As St. Paul tells us in Romans, when we don't know how to pray or what to pray for, all we need to do is to turn to the Spirit, who intercedes for us according to the will of the Father. When was the last time you invoke the Holy Spirit to intercede for you? This is effective especially when we are praying over someone. We don't have to know the whole situation or what is essentially needed. The Spirit does. So we invoke the Spirit, who is the Spirit of Truth. What we are ultimately praying for is what is best for the person, according to the perfect will of God.