Let us, then, embracing more and more this good obedience, give ourselves to the Lord; clinging to what is surest, the cable of faith in Him, and understanding that the virtue of man and woman is the same. For if the God of both is one, the master of both is also one; one church, one temperance, one modesty; their food is common, marriage an equal yoke; respiration, sight, hearing, knowledge, hope, obedience, love all alike. And those whose life is common, have common graces and a common salvation; common to them are love and training.
St. Clement of Alexandria, Pedagogus, Book I, Chapter 4