ANSWER: The person in question should not be assigned any responsibility in the congregation until he repents! All of the people involved in the relationship described need to be taught the truth about their condition. Polygamy is sin! God has ordained that marriage is between two people, one man and one woman, until separated by death (Matthew 19:4-6; Romans 7:1-3). When a man and a woman are scripturally married and another person enters that relationship, all of those actively involved do so without the blessing of God. Further, all who knowingly participate in such a marriage are in sin as long as it continues. The above passages demand that the third party be excluded from the relationship, and that all who have participated come to repentance. Without scriptural repentance (Matthew 21:28-31; Luke 13:3; Acts 8:22; Acts 17:30), none can be saved.

After the person in question has been taught and every attempt has been made to win his soul again, if he refuses to repent scripturally, it is commanded of God that fellowship be withdrawn from him, that his soul may be saved in the day of the Lord Jesus (1 Corinthians 5).