Irenaeus Against Heresies Book IV And not only so, but the Lord also showed that certain precepts were enacted for them by Moses, on account of their hardness [of heart], and because of their unwillingness to be obedient, when, on their saying to Him, "Why then did Moses command to give a writing of divorcement, and to send away a wife? "He said to them, "Because of the hardness of your hearts he permitted these things to you; but from the beginning it was not so; "[179]