Romans 1:4

² (Which he had promised afore by his prophets in the holy scriptures,)

³ Concerning his Son Jesus Christ our Lord, which was made of the seed of David according to the flesh;

And declared to be the Son of God with power, according to the spirit of holiness, by the resurrection from the dead:

⁵ By whom we have received grace and apostleship, for obedience to the faith among all nations, for his name:

⁶ Among whom are ye also the called of Jesus Christ:

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: and who through the Spirit of holiness was declared with power to be the Son of God by His resurrection from the dead: Jesus Christ our Lord.
KJV: And declared to be the Son of God with power, according to the spirit of holiness, by the resurrection from the dead:
WEB: who was declared to be the Son of God with power according to the Spirit of holiness, by the resurrection from the dead, Jesus Christ our Lord,
ASV: who was declared [to be] the Son of God with power, according to the spirit of holiness, by the resurrection from the dead; [even] Jesus Christ our Lord,
DARBY: marked out Son of God in power, according to [the] Spirit of holiness, by resurrection of [the] dead) Jesus Christ our Lord;
BLB: the One having been determined the Son of God in power according to the Spirit of holiness by resurrection [from] the dead: Jesus Christ our Lord,

ÅB: som ved hellighetens ånd ble vist å være Guds mektige Sønn ved oppstandelsen fra de døde: Jesus Kristus, vår Herre.
OTB: og som ble erklært å være Guds Sønn med kraft etter hellighetens Ånd ved oppstandelsen fra de døde, Jesus Kristus vår Herre.
B1930: som efter hellighets ånd er godtgjort å være Guds veldige Sønn ved opstandelsen fra de døde, Jesus Kristus, vår Herre,

Hebrews 5:5–6
So also Christ glorified not himself to be made an high priest; but he that said unto him, Thou art my Son, to day have I begotten thee.
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Hebrews 9:14
How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God?
Read in context
Ephesians 1:19–23
And what is the exceeding greatness of his power to us-ward who believe, according to the working of his mighty power,
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2 Corinthians 13:4
For though he was crucified through weakness, yet he liveth by the power of God. For we also are weak in him, but we shall live with him by the power of God toward you.
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Acts 13:33–35
God hath fulfilled the same unto us their children, in that he hath raised up Jesus again; as it is also written in the second psalm, Thou art my Son, this day have I begotten thee.
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Acts 5:30–32
The God of our fathers raised up Jesus, whom ye slew and hanged on a tree.
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John 2:18–21
Then answered the Jews and said unto him, What sign shewest thou unto us, seeing that thou doest these things?
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Acts 2:32
This Jesus hath God raised up, whereof we all are witnesses.
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