Summa Theologica

By Thomas Aquinas

OF MATRIMONY AS A SACRAMENT (FOUR ARTICLES)

We must next consider matrimony as a sacrament. Under this head there are four points of inquiry:

(1) Whether matrimony is a sacrament?

(2) Whether it ought to have been instituted before sin was committed?

(3) Whether it confers grace?

(4) Whether carnal intercourse belongs to the integrity of matrimony?