The whole system of Christianity rests upon the fact that "Christ is risen from the dead." For "If Christ be not risen, then is our preaching vain, and your faith is also vain: you are yet in your sins."
The divinity of Christ finds its surest proof in His resurrection, since He was "Declared to be the Son of God with power, according to the spirit of holiness, by the resurrection from the dead." It would not be unreasonable to doubt His Deity if He had not risen.
Moreover, Christ's sovereignty depends upon His resurrection — "For to this end Christ both died, and rose, and revived, that He might be Lord both of the dead and living."
Also, our justification is linked with Christ's victory over death and the grave; for "He was delivered for our offences, and was raised again for our justification."
Our very regeneration is connected with His resurrection, for we are "Begotten again unto a lively hope by the resurrection of Jesus Christ from the dead." And most certainly, our ultimate resurrection rests here, for "If the spirit of Him that raised up Jesus from the dead dwell in you, He that raised up Christ from the dead shall also quicken your mortal bodies by His spirit that dwelleth in you."
If Christ be not risen, then shall we not rise; but if He be risen then they who are asleep in Christ have not perished, but in their flesh shall surely behold their God.