Numbers 18:23

Verse 23. But the Natural nevertheless are capable of uses by conjunction with the celestial and the spiritual man, and must endure temptations according to their quality; they are comparatively and perpetually in external worship in the process of their regeneration; and yet the good of their charity is to be distinguished from the good of their faith, as being worship from love and not for the sake of reward, or as being the Lord's life in man which is not ascribed to self.