Jesus was a change agent, in case you missed that. He had a certain way with sharing what really needed to be different. He talked directly to religious leaders and told them that the way that they were living, in spite of following the letter of the law, was sinful. Harsh!
In Romans 11 Paul writes to the church in Rome about Jesus’ ultimate sacrifice. The book of Romans has a special emphasis: Jesus’ death opened the door to those who were not Jewish. Wow! This was actually an incredible difference. This was something that not only Paul had to learn, but many of the apostles and early church congregations had to learn this as well. It was such a profound and new idea for everyone, Paul wanted again to be sure that this was clear to the church in Rome and that they would not fall into the trap that others had, thinking that to become a Christian you first had to become a Jew.