My wife has a friend who has asked me to spend some time with her husband. They are having some big issues. He uses drugs and is abusive toward her. While I feel it is best for her to leave this situation she refuses because this is her marriage and she believes it would be a sin to leave him. He is not a Christian but he did attend our church 2 weeks ago and wants to come back. I believe that I am being called to help him but I have no idea where to start. Any advice in this area would be greatly appreciated. And prayer is always welcome.