This can be stated in active form. Alternate translation: "As the soldiers were ready to bring Paul" (See: [[rc://en/ta/man/translate/figs-activepassive]])
The chief captain uses this questions to express surprise that Paul is not who he thought he was. Alternate translation: "So you speak Greek." or "I didn't know you spoke Greek." (See: [[rc://en/ta/man/translate/figs-rquestion]])