26 Domestic society being confirmed, therefore, by this bond of love, there should flourish in it that "order of love," as St. Augustine calls it. This order includes both the primacy of the husband with regard to the wife and children, the ready subjection of the wife and her willing obedience, which the Apostle commends in these words: "Let women be subject to their husbands as to the Lord, because the husband is the head of the wife, and Christ is the head of the Church."
Source: Casti Connubii (Vatican.va)