Because of our own level of development, we live here in the physical world, we are bound by it, conditioned. It is very hard for us to leave the physical world at will. We can, we do it mechanically every night when we sleep, the body goes to sleep, the consciousness goes out, it goes into the astral world, the fifth dimension. But we are not conscious of that, we are completely unaware of it, we are dreaming. But if you awaken consciousness you can become aware of being in that world of dreams.

If you enter the path of initiation and develop the soul you can become a cognizant resident in that level of nature which corresponds with the fifth dimension. Such a person becomes an angel, a buddha. Their level of being is different. They have a physical body, they look like regular a human being, but their consciousness is at a higher level, more developed, they have a more insight, more understanding, you could say powers. They can experience other dimensions, access ancient knowledge, visit other worlds… But they are not done, they have work to do, since there are levels and levels and levels. The more pure we become, the higher our level of Being, meaning that our center of gravity moves upwards through the heavens (nirvanas), so we are accessing greater and greater levels of happiness. In other words, rather than being jailed in the physical world, we become conscious citizens of higher, more developed regions.

By eliminating a lot of defects (lust, pride, envy) we can reach very high levels of development. We can become cosmocreators, with the knowledge and ability to create worlds. Such beings have tremendous power and happiness, with insight into so much of reality.

When the ego is completely destroyed, and when the consciousness is completely liberated, we can pass through what is called resurrection, in which all that is terrestrial is destroyed, and we are born anew with an immortal astral body called the body of liberation. From there, we enter into levels of development related to the trinity.

Our physical bodies are the pinnacle of mechanical evolution. From here, mechanical evolution only goes back down the wheel. If we want to rise higher, to reach the superior worlds, the heavens, nirvanas, you have to fight, and not to fight against the world, to fight against yourself. Your animal mind is what binds you to mechanical nature. That inherited mind of instinct, of passion, of violence is what binds you to this wheel. To liberate yourself from that is to develop that seed that is in your heart, and let it flourish so that it can be born again. That’s what Jesus was talking about, not to be born of flesh, but spirit.

Except a man be born again, he cannot see the kingdom of God.

Nicodemus saith unto him, How can a man be born when he is old? can he enter the second time into his mother’s womb, and be born?
Jesus answered, Verily, verily, I say unto thee, Except a man be born of water [sex] and of the [Holy] Spirit, he cannot enter into the kingdom of God.
That which is born of the flesh [through common sex] is flesh; and that which is born of the Spirit [through immaculate sexuality] is spirit.” —John 3

To be born again is to be born as a human being, a soul , so that we move out of the mechanical kingdom into the conscious kingdoms of nature.