How do we know that Christ's resurrection is significant for salvation?

In Romans 1:4, Paul states that Christ was declared the Son of God with power according to the spirit of holiness by His resurrection from the dead. This event is pivotal for our understanding of salvation, as it confirms Christ's authority and His successful completion of the work of redemption. Without the resurrection, there is no assurance that Christ's sacrifice was accepted by God, but the resurrection serves to underscore His victory over death and His power to give life to all who believe in Him. For Christians, the resurrection is a promise of eternal life and justification, affirming that Christ indeed has redeemed His chosen people.