Catechism of the Catholic Church

1639 The consent by which the spouses mutually give and receive one another is sealed by God himself. ¹⁴³ From their covenant arises "an institution, confirmed by the divine law, . . . even in the eyes of society." ¹⁴⁴ The covenant between the spouses is integrated into God's covenant with man: "Authentic married love is caught up into divine love." ¹⁴⁵

1640 Thus the marriage bond has been established by God himself in such a way that a marriage concluded and consummated between baptized persons can never be dissolved. This bond, which results from the free human act of the spouses and their consummation of the marriage, is a reality, henceforth irrevocable, and gives rise to a covenant guaranteed by God's fidelity. The Church does not have the power to contravene this disposition of divine wisdom. ¹⁴⁶