New Defender's Study Bible Notes
9:5 a sister, a wife. Although Paul had recommended the celibate state as conducive to full-time dedication to the Lord’s service (I Corinthians 7:32-33), he clearly recognized that it was also good to be married (I Corinthians 7:2,38), and that even the apostles had such a right if they so chose. There is no Biblical requirement for a celibate clergy. Peter (same as “Cephas”), for example, had a wife (Matthew 8:14).