Personally I think God comes first... your faith provides the foundation of which your marriage falls upon... and (can & should) keep your marriage in tact. With that being said, marriage comes second. You make a promise to each other and you grow old with that person. Then comes your children... you parent your children the best way you can and lead by example, but eventually they will have to make a life of their own someday... and their faith, marriage and children will someday come before you as a parent!