The Apostle Paul
1 Corinthians 15:54ESV·traditional attribution

When the perishable puts on the imperishable, and the mortal puts on immortality, then shall come to pass the saying that is written: “Death is swallowed up in victory.”

John Calvin Reformed @genevareformer

54. Then shall be brought to pass the saying This is not merely an amplification, (ἐπεξεργασία,) “Vne declaration ou amplification;” — “A declaration or amplification.” but a confirmation, too, of the preceding statement. For what was foretold by the Prophets must be fulfilled. Now this prediction will not be fulfilled, until our bodies, laying aside corruption, will put on incorruption Hence this last result, also, is necessary.

Matthew Henry Presbyterian @wholebiblehenry

To confirm what he had said of this change, I. He here tells them what had been concealed from or unknown to them till then - that all the saints would not die, but all would be changed. Those that are alive at our Lord's coming will be caught up into the clouds, without dying, Th1 4:11.

Commenting on 1 Corinthians 15:51-57

John Gill Reformed Baptist @doctorgill

But thanks be to God which giveth us the victory,.... Over sin the sting of death, over the law the strength of sin, and over death and the grave; and which will be the ground and foundation of the above triumphant song in the resurrection morn, as it is now at this present time of praise and thankfulness to God: and it is all through...