Paul wrote in 1 Corinthians 9:22 “I have become all things to all people so that by all means I might save some.” In order to reach new people groups with the gospel he would adapt his life to their culture. He never altered the gospel or lived in sin but was constantly embracing people where they were at in life. He learned that from Jesus. God came to Earth as a Jewish man so that He could reach the Jews with the Gospel. They in turn took it to the rest of the world.