New Defender's Study Bible Notes
3:2 one wife. Both bishops and deacons (I Timothy 3:12) must be monogamous and permanent in their marriages, in accord with God’s primeval command, as reinforced by Christ (Genesis 2:24; Matthew 19:3-8).
3:2 apt to teach. It is vital that a bishop (same office as pastor) have the gift of teaching God’s Word. This is not mentioned as a requirement for deacons.