1. Chapter 8 Text 16-19 Material world is a temporary place of miseries.
Process of material creation and destruction.

2. ä-brahma-bhuvanäl lokäù
Text 16
ä-brahma-bhuvanäl lokäù
punar ävartino ’rjuna
mäm upetya tu kaunteya
punar janma na vidyate
From the highest planet in the material world down to the lowest, all are places of misery wherein repeated birth and death take place. But one who attains to My abode, O son of Kunté, never takes birth again.

3. Material world is a temporary place of miseries.
Those who attain the highest material planets, the planets of the demigods, are again subjected to repeated birth and death. Coming to/from higher from/to lower planet.
Without Krsna Consciousness, one again falls from higher planets to earth.

4. Attaining spiritual kingdom from higher planets
brahmaëä saha te sarve
sampräpte pratisaïcare
parasyänte kåtätmänaù
praviçanti paraà padam
“When there is devastation of this material universe, Brahmä and his devotees, who are constantly engaged in Kåñëa consciousness, are all transferred to the spiritual universe and to specific spiritual planets according to their desires.”

5. Text 17-19 sahasra-yuga-paryantam ahar yad brahmaëo viduù
rätrià yuga-sahasräntäà te ’ho-rätra-vido janäù
avyaktäd vyaktayaù sarväù prabhavanty ahar-ägame
rätry-ägame praléyante tatraivävyakta-saàjïake
bhüta-grämaù sa eväyaà bhütvä bhütvä praléyate
rätry-ägame ’vaçaù pärtha prabhavaty ahar-ägame
By human calculation, a thousand ages taken together form the duration of Brahmä’s one day. And such also is the duration of his night. At the beginning of Brahmä’s day, all living entities become manifest from the unmanifest state, and thereafter, when the night falls, they are merged into the unmanifest again. Again and again, when Brahmä’s day arrives, all living entities come into being, and with the arrival of Brahmä’s night they are helplessly annihilated.

6. Calculation of Brahma’s life.

7. Partial annihilation
During the night of Brahma, the lower planetery stystems are submerged in waters of Garbodaka ocean.
Complete devastation all the planetery systems are destroyed including Brahmaloka.
Living entities enter in body of Maha-Visnu and remain in mystic slumber for very very long time.

8. Four fold miseries
Even Brahma is subjected to birth, old age, disease and death.
All the planets from lowest to highest planet in this material creation are place of miseries.
Brahma, if engaged in devotional service, goes to spiritual world at the time of complete devastation.
Devotional service is only auspicious path for attaining the Supreme abode of Lord through chanting of Hare Krsna…..