Apostolic Constitutions, Book VI 29

1You wives, be subject to your own husbands, and have them in esteem, and serve them with fear and love, as holy Sarah honoured Abraham. For she could not endure to call him by his name, but called him lord, when she said, My lord is old. In like manner, you husbands, love your own wives as your own members, as partners in life, and fellow-helpers for the procreation of children. For says He, Rejoice with the wife of your youth. Let her conversation be to you as a loving hind, and a pleasant foal; let her alone guide you, and be with you at all times: for if you are every way encompassed with her friendship, you will be happy in her society. Love them therefore as your own members, as your very bodies; for so it is written, The Lord has testified between you and between the wife of your youth; and she is your partner, and another has not made her: and she is the remains of your spirit; and, Take heed to your spirit, and do not forsake the wife of your youth. An husband, therefore, and a wife, when they company together in lawful marriage, and rise from one another, may pray without any observations, and without washing are clean. But whosoever corrupts and defiles another man's wife, or is defiled with an harlot, when he arises up from her, though he should wash himself in the entire ocean and all the rivers, cannot be clean.