Romans 1:8-15

Paul wants to go to Rome. He wants to strengthen them spiritually, but he is not meaning to say that he's some high and mighty apostle for which they must all bow down in inferiority to. It's not as if he's coming to help them and they need him. Instead, though he may help them, he knows that his coming to them will be mutually encouraging. He ends this paragraph by mentioning his obligation to everyone, preaching the gospel to them.