And declared to be the Son of God with power, according to the Spirit of holiness, by the resurrection from the dead:
All Commentaries on Romans 1:4 Go To Romans 1
Ambrosiaster
AD 400
When Paul speaks about the Son of God he is pointing out that God is Father, and by adding the Spirit of holiness he indicates the mystery of the Trinity. For he who was incarnate, who obscured what he really was, was then predestined according to the Spirit of holiness to be manifested in power as the Son of God by rising from the dead, as it is written in Psalm : “Truth is risen from the earth.” For every ambiguity and hesitation was made firm and sure by his resurrection, just as the centurion, when he saw the wonders, confessed that the man placed on the cross was the Son of God. … Note that Paul did not say “because of the resurrection of Jesus Christ” but “because of his resurrection from the dead,” because the resurrection of Christ led to the general resurrection. For this power and victory in Christ appears to be all the greater, in that a dead man could do the same things as he did when he was alive. By this fact he appeared to dissolve death, in order to redeem us. Thus Paul calls him our Lord. Commentary on Paul’s Epistles.