Jesus was declared to be the Son of God by His resurrection from the dead (Romans 1:4). Paul said it was in power. As those loved by God and called to be saints, we not only declare that Jesus was resurrected in power, we share in the power of His resurrection.
It’s a supernatural thing, and requires God’s help to see it.
having the eyes of your hearts enlightened, that you may know what is the hope to which he has called you, what are the riches of his glorious inheritance in the saints, and what is the immeasurable greatness of his power toward us who believe, according to the working of his great might that he worked in Christ when he raised him from the dead (Ephesians 1:18-20b)
The “immeasurable / surpassing (NASB) / incomparable (NET) greatness of his power” is a lot; it’s not measured in units of horsepower or joules or watts. It is demonstrated in the resurrection from the dead.
It’s something we are gifted, it’s also something that apparently we can desire, and even desire more and more.
and be found in him, not having a righteousness of my own that comes from the law, but that which comes through faith in Christ, the righteousness from God that depends on faith—that I may know him and the power of his resurrection (Philippians 3:9-10b)
The God who promised to send His Son had power to raise His Son from the dead; He was raised for our justification (Romans 4:25). This same God promises that “we shall certainly be united with him in a resurrection like his” (Romans 6:5). We are a communion of resurrection power.