Isaiah
+ NewElection and the Freedom of God's Mercy — Romans 9:6-24
Paul defends God's freedom in Rom 9:6-24: "Jacob I loved, but Esau I hated," and "he has mercy on whomever he wills." Election does not depend on works or human willing "but on God who has mercy" (9:16). Augustine read this as the charter of sovereign grace against Pelagius, and Aquinas held that election is wholly gratuitous, while no one is condemned except for their own sin. Calvin extended election to a symmetrical decree, a step many Catholic and Arminian readers decline. Barth reframed election as God's choice of humanity in Christ, reshaping modern debate. The shared confession is that salvation begins in God's free mercy. The potter-and-clay image of 9:20-21 recalls Isaiah's workshop in Isa 29:16, while the larger argument presupposes the plight of Rom 8:7. Election is the upstream source of the calling of 8:29-30.
The Kenosis — Philippians 2:5-11
Phil 2:5-11 traces Christ's descent and exaltation: though "in the form of God," he "emptied himself, taking the form of a servant," and was therefore "highly exalted." The hymn is the pattern of Christian humility and the map of redemption. Debate centers on the kenosis: of what did Christ empty himself? Chalcedon's two-natures grammar rules out any loss of deity; the self-emptying is the veiling of glory, not its abandonment. Barth read the passage as God's freedom to be lowly, while Bavinck guarded the immutability of the divine nature. The "form of God" language parallels Col 1:15 and John 1:1, and the universal homage of 2:10-11 fulfills the monotheistic oath of Isa 45:23. Every knee will bow to the crucified Lord.
The Virgin Birth — Isaiah 7:14 and Matthew 1
Matt 1:22-23 reads the birth of Jesus as the fulfillment of Isa 7:14: "the virgin shall conceive and bear a son, and they shall call his name Immanuel." Matthew hears in Immanuel, "God with us," the whole meaning of the incarnation. Irenaeus saw the virgin birth as the new beginning of humanity, Mary undoing the knot of Eve. Aquinas defended its fittingness: the new creation requires a new origin. The sign given to faithless Ahaz becomes the sign to the world. The Immanuel theme frames the whole Gospel, returning in Matt 28:20, "I am with you always." It connects to the Word made flesh in John 1:14 and to the protoevangelium's promised seed in Gen 3:15.
The Suffering Servant — Isaiah 53
Isa 53:4-6 is the Old Testament's deepest exposition of substitution: "he was pierced for our transgressions... and the LORD has laid on him the iniquity of us all." The Servant suffers not for his own sin but for the people's. Athanasius read the Servant's death as the divine Word bearing what was ours, and Calvin treated Isaiah 53 as the clearest prophecy of penal substitution. The New Testament quotes it more than any other chapter of the prophets. The sin-bearing of 53:6 illuminates the hilasterion of Rom 3:25 and the atoning blood of Lev 16:15. It is fulfilled in the Lamb of God of John 1:29, the one who takes away the sin of the world.
The Day of Atonement — Leviticus 16
Lev 16:14-22 prescribes the Day of Atonement: blood sprinkled on the mercy seat, and a second goat sent into the wilderness bearing the people's iniquities. Propitiation and removal of sin are enacted in one rite. Aquinas read the two goats as together prefiguring Christ's one sacrifice, and Owen drew on this chapter for the nature of substitution. The mercy seat (kapporet) is the meeting place of holiness and mercy. Hebrews makes this the controlling type for Christ's priesthood in Heb 9:11-14, and Paul calls Christ the hilasterion — the mercy seat — in Rom 3:25. The scapegoat's burden anticipates the Servant of Isa 53:6.