He rules over His body, as every head rules over every physical body. This is a willing subjection, a loving subjection. It can be a willing subjection, because Christ loves and saves the Church. By His life-giving Spirit, He keeps His Church alive, consoles Her, embraces Her, and protects Her. Because this is true of Christ and the Church.
Scripture teaches that marriage is a permanent bond, broken only by death.
Simply because there is a permanent cleaving of Christ to His Church. Even when His people are unfaithful, He always brings them back. This is why, in marriage, the wife is not the husband's equal . Genesis 2 shows that woman was taken out of the side of man, is his helper, fit for him. Nor would the wife who serves Christ.