Romans
Paul's primary theme in Romans is presenting the gospel (the "good news"), God's plan of salvation and righteousness for all humankind, Jew and non-Jew alike.
But the Comforter, which is the Holy Ghost, whom the Father will send in my name, he shall teach you all things,
and bring all things to your remembrance, whatsoever I have said unto you. John 14:26
Paul's primary theme in Romans is presenting the gospel (the "good news"), God's plan of salvation and righteousness for all humankind, Jew and non-Jew alike.