When is Death swallowed up in victory?

Les explains that Paul continues dealing with putting in the grave the corruptible and resurrecting the incorruptible. In verse 54, Paul writes that when this corruptible shall have put on incorruption, and this mortal—the body formed for death—shall have put on immortality, then the saying written is brought to pass: 'Death is swallowed up in victory.' Les also reminds us the rapture is not prophetically announced; we don't know when it will happen, but as the world scene is fulfilled for the final seven years and the Second Coming, we must be ready at least seven years ahead. Thus death is swallowed up in victory at that future resurrection when believers receive incorruption and immortality.