The Second Epistle of Clement to the Corinthians

And the Lord says:—No servant can serve[*](The opposition between this world and the world to come) two masters. If we desire to serve both God and Mammon it is unprofitable to us,

For what is the advantage if a man gain the whole world but lose his soul?

Now the world that is, and the world to come are two enemies.

This world speaks of adultery, and corruption, and love of money, and deceit, but that world bids these things farewell.

We cannot then be the friends of both; but we must bid farewell to this world, to consort with that which is to come.

We reckon that it is better to hate the things which are here, for they are little, and short-lived, and corruptible, but to love the things which are there, the good things which are incorruptible.

For if we do the will of Christ we shall gain rest; but if not, nothing shall rescue us from eternal punishment, if we neglect his commandments.