The Bible tells us that marriage was instituted by God who concluded that it was not good for man to be alone so He helped him with establishing family. The family is the foundation of human life and society and the family arises from marriage. Marriage arises by pronouncing the marital consent of properly prepared fiances. In conjugal love and communion between two spouses of different sexes, the love between Christ and the church is also manifested. It is very important that at the time of marriage there are no prohibitions that could later affect the validity of the marriage. This dissertation deals precisely with issue of barriers to marriage, and it is divided into three parts. The first part discusses the pastoral preparation for marriage, about marriage as a sacrament, and at the end of the first part, also discusses about indissolubility of marriage. The intention is to emphasize that marriage is a sacrament which means that God is the one who helps in communion and love, and in overcoming everyday obstacles, not just a civil contract. The second chapter is devoted to the abstacles, and third, the last chapter deals with consent as a constitutive element of marriage and the effects of marriage itself.