Thematic Bible: Certainty of, proved by the resurrection of Christ

Now, if it is proclaimed of Christ that he has been raised from the dead, how is it that some of you say that there is no such thing as a resurrection of the dead? But, if there is no such thing as a resurrection of the dead, then even Christ has not been raised; And, if Christ has not been raised, then our proclamation is without meaning, and our faith without meaning also! read more.
Yes, and we are being proved to have borne false testimony about God; for we testified of God that he raised the Christ, whom he did not raise, if, indeed, the dead do not rise! For, if the dead do not rise, then even Christ himself has not been raised, And, if Christ has not been raised, your faith is folly-your sins are on you still! Yes, and they, who have passed to their rest in union with Christ, perished! If all that we have done has been to place our hope in Christ for this life, then we of all men are the most to be pitied. But, in truth, Christ has been raised from the dead, the first-fruits of those who are at rest.