Paul financially supported himself as a tentmaker (See Acts 18:3 - “There he met a Jew named Aquila, a native of Pontus, who had recently come from Italy with his wife Priscilla, because Claudius had ordered all Jews to leave Rome. Paul went to see them, 3 and because he was a tentmaker as they were, he stayed and worked with them.”)
There are also other mentions he was a tentmaker.