(Paul’s reason for writing this letter)The apostle was persuaded that the Roman Christians were filled with a kind and affectionate spirit, as well as with knowledge. He had written to remind them of their duties and their dangers, because God had appointed him the minister of Christ to the Gentiles. He acknowledges their readiness to practice Christian virtues and their understanding of the doctrinal aspects of Christianity.
It reads in Romans 15:14-21 EASY
My Christian friends, I myself am completely sure that you are always good. You know everything about God’s message, so that you are able to teach one another what is right. I know that is true, but I still needed to write this letter to you. I have written to you strongly, so that you would remember certain things. Because God is kind, he has chosen me to serve him in this way. I am a servant of Christ Jesus among the Gentiles. I tell people God’s good news. I work like a priest so that God will accept the Gentiles. I offer them to God. The Holy Spirit has made them clean and so God accepts them. So I can be proud about my work. I can serve God well because I belong to Christ Jesus. But I will only speak about the work that Christ has made me able to do. I have lived among the Gentiles and I have spoken God’s message to them. They have obeyed God as a result of Christ’s work through me. God’s Holy Spirit used his power to do many miracles. He caused many great and powerful things to happen. As a result, I have told the whole good news about Christ to many people. I have told it while I travelled all the way from Jerusalem to Illyricum. I want to go to places where nobody has ever told people about Christ before. I want to tell the good news to people in those places. That is what I have always wanted to do. I do not want to work in a place where someone else has already started to teach God’s message. This is written in the Bible about God’s Messiah: ‘Those people that nobody ever told them about him will now see. Those people who have never heard about him will now understand.’

