Genesis 38:28

Even the very name Abishag in its mystic meaning points to the greater wisdom of old men. For the translation of it is, “My father is over and above,” or “my father’s roaring.” The term “over and above” is obscure, but in this passage is indicative of excellence, and implies that the old have a larger stock of wisdom, and that it even overflows by reason of its abundance. In another passage “over and above” forms an antithesis to “necessary.” Moreover, Abishag, that is, “roaring,” is properly used of the sound which the waves make, and of the murmur which we hear coming from the sea. From which it is plain that the thunder of the divine voice dwells in old men’s ears with a volume of sound beyond the voices of men. Again, in our tongue Shunamite means “scarlet,” a hint that the love of wisdom becomes warm and glowing through religious study. …

In speaking thus I do not mean to sever the law from the gospel, as Marcion falsely does. No, I receive one and the same God in both who, as the time and the object vary, is both the Beginning and the End, who sows that He may reap, who plants that He may have somewhat to cut down, and who lays the foundation that in the fulness of time He may crown the edifice. Besides, if we are to deal with symbols and types of things to come, we must judge of them not by our own opinions but in the light of the apostle’s explanations. Hagar and Sarah, or Sinai and Zion, are typical of the two testaments. Leah who was tender-eyed and Rachel whom Jacob loved signify the synagogue and the church. So likewise do Hannah and Peninnah of whom the former, at first barren, afterwards exceeded the latter in fruitfulness. …