We find the Pharisee Saul with two names, in which I take…
1. Saul - Hebrew name with regal connotation
2. Paul - Roman name
Adopting his Roman name would allow Paul to approach the Gentiles to whom he was sent and speak to them in their own language, becoming as one of them and setting them at ease. It is also possible that Paul gave up the use of his Hebrew name, Saul, with its regal connotation and chose to use his Roman name, Paul, meaning “little” or “small,” because he desired to became smaller in order to present Christ as greater. - When and why was Saul’s name changed to Paul? | GotQuestions.org
1. Saul - Hebrew name with regal connotation
2. Paul - Roman name
Adopting his Roman name would allow Paul to approach the Gentiles to whom he was sent and speak to them in their own language, becoming as one of them and setting them at ease. It is also possible that Paul gave up the use of his Hebrew name, Saul, with its regal connotation and chose to use his Roman name, Paul, meaning “little” or “small,” because he desired to became smaller in order to present Christ as greater. - When and why was Saul’s name changed to Paul? | GotQuestions.org