1:4 And {g} declared [to be] the Son of God with {h} power, according to the spirit of holiness, by the resurrection from the dead:
(g) Shown and made manifest.
(h) The divine and mighty power is set against the weakness of the flesh, for it overcame death.
1:4 But declared [to be] the Son of God. Though in human form he was demonstrated to be divine by power, such power as he displayed in mighty miracles, and especially by the greater miracle of his own resurrection from the dead.
According to the spirit of holiness. It must be noted that this is a contrast with according to the flesh in Ro 1:3, and hence must refer to our Lord's holy nature. The body was descended from David, but the pure, holy life was demonstrated to be divine. One was a human nature; the other was a divine nature. This nature is spoken of as the spirit of holiness, because it is contrasted with sinful flesh.
1:4 But powerfully declared to be the Son of God, according to the Spirit of Holiness - That is, according to his divine nature. By the resurrection from the dead - For this is both the fountain and the object of our faith; and the preaching of the apostles was the consequence of Christ's resurrection.
1:1-7 The doctrine of which the apostle Paul wrote, set forth the fulfilment of the promises by the prophets. It spoke of the Son of God, even Jesus the Saviour, the promised Messiah, who came from David as to his human nature, but was also declared to be the Son of God, by the Divine power which raised him from the dead. The Christian profession does not consist in a notional knowledge or a bare assent, much less in perverse disputings, but in obedience. And all those, and those only, are brought to obedience of the faith, who are effectually called of Jesus Christ. Here is, 1. The privilege of Christians; they are beloved of God, and are members of that body which is beloved. 2. The duty of Christians; to be holy, hereunto are they called, called to be saints. These the apostle saluted, by wishing them grace to sanctify their souls, and peace to comfort their hearts, as springing from the free mercy of God, the reconciled Father of all believers, and coming to them through the Lord Jesus Christ.