Isaías 54
Procopius of Gaza
Isaías 54:11
Some think that Jesus is here called "coal" since he was placed as a foundation in Zion and those who believe in him will not be ashamed. Similarly Amos calls him "adamantine" in these words, "I will place adamantine in the middle of the people of Israel." And Zachariah, "Look, I will give the dawn over my servant. And the stone that I will give before the face of Joshua, on that stone there are seven eyes." For Christ is the all-seeing one. This coal, he says, is also the support and the foundation stone, to which, since they approximate to it, the apostles, too, are here called "foundations" and are spoken of as marked out by the name of sapphire, as in the seventeenth psalm, which says, "The springs of waters are uncovered and the foundations of the earth are revealed at your chastisement and from the breath of your Spirit, O Lord." For those in Israel were shaken by what the apostles dared to do through Christ, when purification through water first appeared. The disciples of the Savior receive this title, but the prophets are also called foundation, as Paul says, "building on the foundation of the apostles and prophets." Sapphire is the color of heaven, and again Paul tells us that this denotes the citizenship of heaven. … But "anthracite" [coal], according to another interpretation that has been handed down, refers to stones that adorn, just as the sainted martyrs who have been tested by fire adorn with stimei [a type of eyeliner] the eyes of the bridegroom of Christ. — COMMENTARY ON ISAIAH 54:1-17
Isaías 54:14
And then Isaiah adds, "and you will be built up in righteousness." For with the utmost rightness the architect and builder of the whole is the wisdom of God, fitting the living and smooth stones to the building. Some he uses for towers, others for foundations and others for walls; some for the building of the temple of the city and others for the surrounding area. And with the rest he builds up the rest of the city, not in the human way by discriminating between types of people or evaluating them, but allowing all in, free and slave, poor and rich, so that they whose lives were unknown receive honor. And then God promises that he will give the church further orders, to step back from evil so that terror shall not come near. He instructs them in the mystery. Formerly the bride was encouraged by the prophets to advance to communion, summoning her through holiness and righteousness. By the kisses of Christ's mouth we have been kissed. He has appeared in the flesh, speaking mouth to mouth to us. He says that no enemy will prevail against [the church] if it cultivates righteousness. — COMMENTARY ON ISAIAH 54:1-17