This is a symbol of baptism, which now saves you-- not the putting away of the filth of the flesh, but the answer of a good conscience toward God, through the resurrection of Jesus Christ,

 He tells her something very simple--nothing else than to be a good wife. It is by the silent preaching of the loveliness of her life that she must break down the barriers of prejudice and hostility, and win her husband for her new Master. 