Genesis 12:4

When, after the record of the death of Terah, the father of Abraham, we next read, “And the Lord said to Abram, Get thee out of thy country, and from thy kindred, and from thy father’s house,” etc., it is not to be supposed, because this follows in the order of the narrative, that it also followed in the chronological order of events. For if it were so, there would be an insoluble difficulty. For after these words of God which were spoken to Abraham, the Scripture says: “And Abram departed, as the Lord had spoken unto him; and Lot went with him. Now Abraham was seventy-five years old when he departed out of Haran.” How can this be true if he departed from Haran after his father’s death? For when Terah was seventy years old, as is intimated above, he begat Abraham; and if to this number we add the seventy-five years which Abraham reckoned when he went out of Haran, we get 145 years. …

Further, they were possessed with another apprehension; it was written, “Cursed is every one that continueth not in all things that are written in the book of the Law, to do them.” ( Deut. xxvii. 26 .) And this he removes, with great skill and prudence, turning their argument against themselves, and showing that those who relinquish the Law are not only not cursed, but blessed; and they who keep it, not only not blessed but cursed. They said that he who kept not the Law was cursed, but he proves that he who kept it was cursed, and he who kept it not, blessed. Again, they said that he who adhered to Faith alone was cursed, but he shows that he who adhered to Faith alone, is blessed. And how does he prove all this? for it is no common thing which we have promised; wherefore it is necessary to give close attention to what follows. …

5. I have spoken plainly, lest you might ignorantly suppose that Scripture sanctions your grief; and that, if you err, you have reason on your side. And, so far, my words have been addressed to the average Christian woman. But now it will not be so. For in your case, as I well know, renunciation of the world has been complete; you have rejected and trampled on the delights of life, and you give yourself daily to fasting, to reading, and to prayer. Like Abraham, you desire to leave your country and kindred, to forsake Mesopotamia and the Chaldæans, to enter into the promised land. Dead to the world before your death, you have spent all your mere worldly substance upon the poor, or have bestowed it upon your children. I am the more surprised, therefore, that you should act in a manner which in others would justly call for reprehension. …

16. Now here we have the explanation of what I am endeavouring to show, how it is that the sons of Mary, the sister of our Lord’s mother, who though not formerly believers afterwards did believe, can be called brethren of the Lord. Possibly the case might be that one of the brethren believed immediately while the others did not believe until long after, and that one Mary was the mother of James and Joses, namely, “Mary of Clopas,” who is the same as the wife of Alphæus, the other, the mother of James the less. In any case, if she (the latter) had been the Lord’s mother S. John would have allowed her the title, as everywhere else, and would not by calling her the mother of other sons have given a wrong impression. …