What is the point of marriage? To understand the point of marriage, we need to first understand the sacramentality of marriage. What is a Sacrament? It is a visible sign of an invisible reality, instituted by Christ as a source of grace. In the Sacrament of Matrimony, the visible sign is the couple themselves. What is the invisible reality of this sign? Jesus. The husband and wife have the mission of being Christ to each other, to their children, and to the whole world. You cannot have a loftier task!