I have just explained that there are three levels of the human mind called earthly, spiritual, and heavenly; that these levels can be opened in us in sequence; that the earthly level is opened first; and that afterward, if we abstain from evils as sins and turn to the Lord, the spiritual level is opened, and ultimately the heavenly level. Since the sequential opening of these levels depends on how we live, it follows that the two higher levels may also not be opened, in which case we stay on the earthly level, which is the most remote.
It is recognized in the world that we have an earthly self and a spiritual self, or an outer and an inner self. It is not recognized that the earthly self becomes spiritual by the opening of a higher level within, and that this opening is accomplished by a spiritual life, a life in accord with divine precepts, and that unless we live by these precepts, we remain centered on the physical world.
There are three kinds of earthly-minded people. One kind is made up of individuals who have no knowledge of divine precepts, a second of people who know that such precepts exist but give no thought to living by them, and a third of people who trivialize and deny them. As for the first kind, the ones who have no knowledge of divine precepts, they cannot help remaining earthly-minded because there is no way for them to teach themselves. We all learn about divine precepts from others, who know about them from their religion. We do not gain them by direct revelation (see Sacred Scripture Sections 114–118).
People of the second kind, the ones who know that divine precepts exist but give no thought to living by them, also remain earthly-minded and are not concerned with anything except what is worldly and physical. After death they become employees and servants of the spiritual-minded, performing for them the functions for which they are fitted. This is because an earthly-minded individual is an employee or servant, while a spiritual-minded one is an employer or householder.
People of the third kind, the ones who trivialize and deny divine precepts, not only remain earthly-minded but even become sense-centered to the extent that they trivialize and deny divine precepts. Sense-centered people are the lowest of the earthly-minded, unable to raise their thoughts above deceptive physical appearances. After death, they are in hell. Since people in this world do not know what a spiritual-minded person is and what an earthly-minded person is, and since many call someone “spiritual” who is merely earthly-minded, and vice versa, I need to say the following things clearly.
1.What an earthly-minded person is and what a spiritual-minded person is.
2.What an earthly-minded person is like whose spiritual level has been opened.
3.What an earthly-minded person is like whose spiritual level has not been opened but is not yet closed.
4.What an earthly-minded person is like whose spiritual level has been completely closed.
5.Lastly, the difference between the life of a wholly earthly minded person and the life of an animal.
from Regeneration, Pages 104-105