Things of the world and Things of heaven

Php 3:18  (For many walk, of whom I have told you often, and now tell you even weeping, that they are the enemies of the cross of Christ:
Php 3:19  Whose end is destruction, whose God is their belly, and whose glory is in their shame, who mind earthly things.)
Php 3:20  For our conversation is in heaven; from whence also we look for the Saviour, the Lord Jesus Christ: