At the same time the Spirit also helps us in our weakness, because we don’t know how to pray for what we need. But the Spirit intercedes along with our groans that cannot be expressed in words. The one who searches our hearts knows what the Spirit has in mind. The Spirit intercedes for God’s people the way God wants him to.
Nothing Can Separate Us From God’s Love
We know that all things work together for the good of those who love God—those whom he has called according to his plan.
It is amazing to me that these verses are all together in the Bible. First God has Peter tell us if we cannot pray the Spirit will intercede for us. God knowds what we want to pray and the Spirt will speak to God for us.
Then we are told that all things work together for the good of those who love God.
So you could take that as the Holy Spirit working with us so that God get's our prayers but more often than that the last verse is the one that people want to count on for their promises. All things work together for the good of those who love God. That is a promise to us, we love God and God will help us.
I'm not a Bible scholar so I don't know. I've always counted on the first verse though. When I am on my knees and I don't know what to pray I ask for the Holy Spirt to intervene and help me to pray. I thank God for His graces and for the gifts he has given us all. Never stop praying! God Bless