This same grace responsible for his calling, was in effect, responsible for his faithfulness too. The truth and power of the Resurrection of Christ gave Paul a new life and heart to begin living for the glory of our God and Savior Jesus Christ. So Paul testifies to the Corinthians. But now the last proof remains. The last proof is that common message every preacher and believer down through the ages has accepted and rests upon.
Every true believer knows the power of the resurrection for themselves.
We may not have seen Christ raised from the dead with our physical eyes, but by the eyes of faith, God has given us conclusive sight. Sufficient enough to live by and even die by. Until he dies and is raised from the dead, he can never claim to be of God or God Himself, and is unworthy of following let alone faith. But for most the greatest deception of faith is to believe in oneself, as sufficient for righteousness and presentation to God for eternity. I beg of all who listen, turn from such idols of the mind, and turn from those who stalk the past, and those who walk with us in the present, and turn to the only living and true God who is alive forevermore, the resurrected and living Christ, the Lord Jesus.