1 Corinthians 15:54
4 “But when this corruptible shall have put on incorruption, and this moral shall have put on immortality, then shall come to pass the saying that is written, Death is swallowed up in victory.”
Thus, since he was speaking of great and secret things, he again takes prophecy to confirm his word. “Death is swallowed up in victory:” i.e., utterly; not so much as a fragment of it remains nor a hope of returning, incorruption having consumed corruption.
Source: Homilies on First Corinthians (New Advent)