The Bible has many contrasts, things that are opposite one another, because of the incredibly powerful transformation that comes about as a result of the gospel. A number of those are found in the Gospel of John, contrasts like life and death, light and darkness, good and evil, this world and the world to come, the wrath of God and the love of God, angels and demons, God and Satan, heaven and hell.
Preachers and hymn writers have often imitated that pattern with eloquent creativity as a means of impressing people with the dramatic change that happens when the gospel re-creates a human soul in the image of Jesus. Instead of having one thing, we then have another, which is actually just the opposite. It’s a way of portraying what Paul emphasized in letters like Ephesians, where he taught that a Christian is not just an improved version of the “old,” but is actually something entirely new. Paul said that very thing in 2 Corinthians 5:17. “If anyone is in Christ, the new creation has come. The old has gone, the new is here!” We also see that pattern of contrasts in Ephesians 4:22-24 where Paul calls us to put off and put on.