Thou Art My Son
Psalm 2, the begotten Son and the raging nations, as the early church read it
Psalm 2 opens with the nations in uproar and the kings of the earth banding together "against the LORD, and against his anointed," His Messiah. Then God answers from heaven, and the Anointed speaks: "the LORD hath said unto me, Thou art my Son; this day have I begotten thee. Ask of me, and I shall give thee the heathen for thine inheritance." The apostles read this psalm as a script of Good Friday and Easter: the rulers conspiring against Jesus (Acts 4:25-27), and the Son begotten, that is, declared and enthroned, in the resurrection (Acts 13:33). The early church read it the same way. Clement of Rome and Tertullian in their own words below, with a plain restatement.
The Fathers' words are verbatim and attributed (Clement of Rome and Tertullian, in the Ante-Nicene Fathers, public domain; selected from the running prose, footnote apparatus omitted). The box marked "In plain terms" is our own restatement, never the Fathers' words.
Psalm 2:1-2 · KJVWhy do the heathen rage, and the people imagine a vain thing? The kings of the earth set themselves, and the rulers take counsel together, against the LORD, and against his anointed…
"They were fulfilling the psalm, 'Let us burst their bonds asunder, and cast away their yoke from us;' and this indeed after that 'the heathen raged, and the people imagined vain devices;' after that 'the kings of the earth set themselves, and the rulers took their counsel together against the Lord, and against His Christ.'"
TertullianThe opening of the psalm reads like a prophecy of the trial of Jesus, and the apostles said so: gathered "against the LORD, and against his anointed" were "Herod, and Pontius Pilate, with the Gentiles, and the people of Israel" (Acts 4:27), the rulers conspiring, the nations raging. Tertullian sees the same pattern running on into the persecution of the church. The rebellion against God's Anointed that crested at the cross is the same rebellion the world still wages, and the psalm has already declared how it ends.
Psalm 2:7-8 · KJV…the LORD hath said unto me, Thou art my Son; this day have I begotten thee. Ask of me, and I shall give thee the heathen for thine inheritance, and the uttermost parts of the earth for thy possession.
"But concerning His Son the Lord spoke thus: 'Thou art my Son, today have I begotten Thee. Ask of Me, and I will give Thee the heathen for Thine inheritance, and the uttermost parts of the earth for Thy possession.' And again He saith to Him, 'Sit Thou at My right hand, until I make Thine enemies Thy footstool.'"
Clement of Rome"You will not be able to put in a claim for some son of David being here meant, rather than Christ; or for the ends of the earth being promised to David, whose kingdom was confined to the Jewish nation simply, rather than to Christ, who now embraces the whole world in the faith of His gospel."
TertullianClement, within living memory of the apostles, reads "Thou art my Son" straightforwardly of Christ, and pairs it (as Hebrews 1 does) with "Sit thou at my right hand", the begotten Son who is also the enthroned Lord. And Tertullian makes the decisive point: the promise is too large for any mere king. No son of David ever ruled "the uttermost parts of the earth"; David's kingdom was one nation. Only Christ "now embraces the whole world in the faith of His gospel." The psalm's reach bursts the bounds of any earthly throne and lands on the risen Christ, to whom the Father gives the nations.
Where the traditions diverge
That Psalm 2 is messianic and fulfilled in Christ is common Christian ground, nailed down by the New Testament: the apostles pray Psalm 2:1-2 over the conspiracy against Jesus (Acts 4:25-28), Paul cites "this day have I begotten thee" of the resurrection (Acts 13:33), Hebrews quotes it for the Son's supremacy (Hebrews 1:5; 5:5), and Revelation echoes its "rod of iron" reign (Revelation 19:15). So Catholic, Orthodox, and Protestant read the begotten Son and His worldwide inheritance as Christ's. Two clarifications sharpen it. First, "this day have I begotten thee" was twisted by the adoptionists into the idea that Jesus only became Son at His baptism or resurrection; the church answered that the eternal Son was here declared and enthroned, "begotten from the dead" as firstborn (compare Wisdom and the Word on eternal generation), not a man promoted to deity. Second, the older Jewish reading takes it as a coronation psalm for a Davidic king, the "son" being the king by covenant adoption (2 Samuel 7:14), without a divine or universal Messiah; the modern critical reading agrees, treating it as royal enthronement liturgy. Tertullian's reply still stands: the psalm promises one nation's king the whole earth and calls him God's begotten Son, language no mere monarch could carry. The drift to resist is shrinking Psalm 2 back into a court poem and losing both the divine Son and the King who truly inherits the nations. (See the Lord said unto my Lord, the Son is God, and Pentecost.)
Patristic text from Clement of Rome, First Epistle to the Corinthians (ch. 36), and Tertullian, Against Marcion (Book III), in the Ante-Nicene Fathers (public domain), selected from the running prose with footnote apparatus omitted; nothing added or paraphrased within the quotation marks. Scripture in the King James Version; the plain-language lines are our own restatement. This passage in the Study Bible; Psalm 2 at BibleHub.