[1][2] Devachan is regarded as the place where most souls go after death where desires are gratified, corresponding to the Christian belief in Heaven.
However, Devachan is a temporary, intermediate state of being before the soul's eventual rebirth into the physical world.
[3] Through Wisdom and Knowledge, one can reach Nirvana and be free from the cycle of birth and death, and even the "false bliss" of Devachan.
While those souls at the zeroth level of initiation (the vast majority of the inhabitants of Earth) go to Summerland (located on the astral plane only a few miles above the surface of Earth) when they die, those who have reached the first, second, or third levels of initiation go to Devachan when they die.
One can also choose to become a Master in the Spiritual Hierarchy upon reaching the fourth level of initiation—then one's entrance into Nirvana is delayed for millions, billions, or trillions of years until one has completed climbing the ladder of initiation by completing one's tasks as a Master in the Spiritual Hierarchy.