“By reason of their state in life, Christian spouses have their own special gifts in the People of God. This grace proper to the sacrament of Matrimony is intended to perfect the couple’s love and to strengthen their indissoluble unity. By this grace they help one another to attain holiness in their married life and in welcoming and educating their children. Christ is the source of this grace. Christ dwells with them, gives them the strength to .. submit to one another out of reverence for Christ and to love one another with supernatural, tender, and fruitful love. In the joys of their love and family life he gives them here on earth a foretaste of the wedding feast of the Lamb.” 

(Catechism of the Catholic Church #1641-42).