Isaiah 7:10

For the one and the same Spirit of God, who proclaimed by the prophets what and of what sort the advent of the Lord should be, did by these elders give a just interpretation of what had been truly prophesied; and He did Himself, by the apostles, announce that the fulness of the times of the adoption had arrived, that the kingdom of heaven had drawn nigh, and that He was dwelling within those that believe on Him who was born Emmanuel of the Virgin. To this effect they testify, [saying,] that before Joseph had come together with Mary, while she therefore remained in virginity, "she was found with child of the Holy Ghost;" [Matthew 1:18] and that the angel Gabriel said unto her, "The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee; therefore also that holy thing which shall be born of thee shall be called the Son of God;" [Luke 1:35] and that the angel said to Joseph in a dream, "Now this was done, that it might be fulfilled which was spoken by Isaiah the prophet, Behold, a virgin shall be with child." [Matthew 1:23] But the elders have thus interpreted what Esaias said: "And the Lord, moreover, said unto Ahaz, Ask for thyself a sign from the Lord thy God out of the depth below, or from the height above. And Ahaz said, I will not ask, and I will not tempt the Lord. And he said, It is not a small thing for you to weary men; and how does the Lord weary them? Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son; and ye shall call His name Emmanuel. Butter and honey shall He eat: before He knows or chooses out things that are evil, He shall exchange them for what is good; for before the child knows good or evil, He shall not consent to evil, that He may choose that which is good." [Isaiah 7:10-17] Carefully, then, has the Holy Ghost pointed out, by what has been said, His birth from a virgin, and His essence, that He is God (for the name Emmanuel indicates this). And He shows that He is a man, when He says, "Butter and honey shall He eat;" and in that He terms Him a child also, [in saying,] "before He knows good and evil;" for these are all the tokens of a human infant. But that He "will not consent to evil, that He may choose that which is good,"— this is proper to God; that by the fact, that He shall eat butter and honey, we should not understand that He is a mere man only, nor, on…

(Verse 10, 11.) And the Lord added, speaking to Achaz, saying: Ask for yourself a sign from the Lord your God in the depths of hell, or in the highest above. He had previously spoken to Achaz through the prophet, saying: Behold, be silent, do not fear, and so on. Since Achaz did not believe, and therefore did not understand, the Lord himself speaks to Achaz, so that at least, frightened by the authority of the Lord, he may accept what is said. For, he says to him, it seems difficult to you that the most powerful kingdoms are to be ended in a short time, and that you will be delivered from great danger along with your people; ask for yourself a sign, not from idols, by whose error you are held captive, but from the Lord your God who promises you help, and that sign is the basis of your request, whether from the depths or from on high. But while only the Seventy interpreted it as 'from the depth of hell,' the others translated it more significantly according to the Hebrew, 'from the depth of the underworld.' Therefore, just as 'the depths of hell' signifies a profound abyss, so we should understand 'the heights above the heavens' as an exalted state. So when you hear a sign about either the underworld or the exalted, believe in the future things that I have mentioned. Do you want, he says, the earth to be split open and the great chasms of the underworld to be revealed, which are said to exist in the heart of the earth, or for the heavens to be opened? Both pertain to the mystery of the death and ascension of the Lord: For he who descended is the one who also ascended (Ephesians 4:10). And in the Apostle we read: 'Don't say in your heart, "Who will ascend into heaven?" (that is, to bring Christ down)' or 'Who will descend into the abyss?' (that is, to bring Christ up from the dead)' (Romans 10:6-7). And in another place, speaking about Christ, it says: 'That you may have strength to comprehend with all the saints what is the breadth and length and height and depth, and to know the love of Christ that surpasses knowledge' (Ephesians 3:18). As far as mystical understanding is concerned, Moses also received signs from the earth, which we read about in the Psalms: He sent signs and wonders among you, O Egypt (Ps. CXXXIV, 9), such as frogs, locusts, gnats, and flies; from heaven, he sent hail, fire, and three days of darkness. We also have the example of Hezekiah,…