A Christian and yet a worldling?

(Horatius Bonar, "The Risen Christ and the Things Above")

Go on in your worldliness; fling yourselves headlong into
the torrent of earth's vanities; but know that the end of
these things is death! "Do not love the world or the things
that belong to the world. If anyone loves the world, love
for the Father is not in him." (1 John 2:15) "You adulterers!
Don't you realize that friendship with this world makes you
an enemy of God? I say it again, that if your aim is to enjoy
this world, you can't be a friend of God." (James 4:4)

The point is settled. The Christian cannot take part with
the world in its follies, and gaieties, and sins!

What! A Christian and yet a worldling--singing its
idle songs, hurrying through its mazy dance, partaking
in its mirth and revelry! Impossible!

We have ceased to be citizens of earth's polluted cities;
we are citizens of heaven! We have a home--but not in
the palaces or haunts of the world. We have a house
not made with hands, eternal in the heavens!

"But our citizenship is in heaven. And we eagerly await
 a Savior from there, the Lord Jesus Christ!" (
Phil. 3:20)