Sacred Scripture begins with the creation and union of man and woman and ends with "the wedding feast of the Lamb" (Rev 19:7, 9). Scripture often refers to marriage, its origin and purpose, the meaning God gave to it, and its renewal in the covenant made by Jesus with his Church. Man and woman were created for each other.
Sacred Scripture and the teaching of the Church confirm these truths about marriage and deepen them. Genesis 1:27 shows us that the human person's complementarity as male and female reflects the image of God. A man "leaves his father and mother and clings to his wife, and the two of them become one flesh" (Gn 2:23). The man joyfully recognizes the woman as "bone of my bone and flesh of my flesh" (Gn 2:23). God blesses the man and woman and commands them to "be fertile and multiply" (Gn 1:28). Jesus echoes these teachings from Genesis when he stated: "…from the beginning the Creator 'made them male and female' and said, for this reason a man shall leave … and the two shall become one flesh" (Matt. 19: 4,5).
These Biblical passages help us to under- stand God's plan for marriage. Marriage is a basic way of giving and growing in love and together attaining salvation. We are not meant to live in isolation, but to find and fulfil ourselves through the love of others. (Gen 2:18, 21-25). The marriage covenant, through which a man and a woman form with each other an intimate communion of life and love, is ordered to the good of the couple as well as to the generation and education of children.
Moreover, the Church, following the Apostle Paul, declares a valid marriage between baptized believers to be a sacrament — a saving reality and path to holiness. In Ephesians 5: 25-33, Paul teaches that Christ made marriage a sign of His love for the Church. This means that a sacramental marriage lets the world see, in human terms, something of the faithful, creative, self-emptying, abundantly life-giving love of our Lord. This Christian meaning confirms and strengthens the human value of a marital union. The sacrament of matrimony perfects the human love of spouses, strengthens their indissoluble unity and sanctifies them on the way to eternal life.
Marriage is based on the free consent of the man and the woman celebrating the sacrament. The parties entering into the covenant of matrimony must want to give themselves to each other, mutually and definitively, in order to live a covenant of faithful and fruitful love. The sacrament of Matrimony establishes the couple in a public state of life in the Church. Because of its public and ecclesial nature, it is fitting that the celebration of the sacrament be public and within the framework of a liturgical celebration, before a priest (or a witness authorised by the Church), the witnesses and the assembly of the faithful. Unity, indissolubility and openness to fertility are essential to marriage. By its very nature, marriage and married love is ordered to the procreation and education of the offspring. Spouses to whom God has not granted children can nevertheless have a married life full of meaning, in both human and Christian terms. The marriage of such couples can manifest the fruitfulness of hospitality and of sacrifice.
By their marriage, the couple witnesses Christ's spousal love for the Church. One of the Nuptial Blessings in the liturgical celebration of marriage refers to this in saying, "Father, you have made the union of man and wife so holy a mystery that it symbolizes the marriage of Christ and his Church."
The Sacrament of Marriage is a covenant, which is more than a contract. Covenant always expresses a relationship between persons. The marriage covenant refers to the relationship between the husband and wife, a permanent union of persons capable of knowing and loving each other and God.