In Acts 13:9, Saul is called "Paul" for the first time on the island of Cyprus, much later than his conversion. The author of Luke–Acts indicates that the names were interchangeable: "Saul, who also is called Paul." He refers to him as Paul through the remainder of Acts. This was apparently Paul's preference since he is called Paul in all other Bible books where he is mentioned, including those he authored. Adopting his Roman name was typical of Paul's missionary style. His method was to put people at ease and approach them with his message in a language and style relatable to them, as he did in 1 Corinthians 9:19–23.