The Apostle Paul
1 Corinthians 15:13BSB·traditional attribution

If there is no resurrection of the dead, then not even Christ has been raised.

Matthew Henry Presbyterian @wholebiblehenry

Having confirmed the truth of our Saviour's resurrection, the apostle goes on to refute those among the Corinthians who said there would be none: If Christ be preached that he rose from the dead, how say some among you that there is no resurrection of the dead? Co1 15:12.

Commenting on 1 Corinthians 15:12-19

John Gill Reformed Baptist @doctorgill

But if there be no resurrection of the dead,.... If there is no such thing as a resurrection of any, if the thing is not possible, if it never has been, is, or will be true in fact: then is Christ not risen.

Albert Barnes Presbyterian @notesbybarnes

Verse 13. But if there be no resurrection of the dead. If the whole subject is held to be impossible and absurd, then it must follow that Christ is not risen, since there were the same difficulties in the way of raising him up which will exist in any case. He was dead; and was buried. He had lain in the grave three days.