The King knew that any nondevotee who attains such opulence merges increasingly into material nature's mode of darkness

Expressions researched:
"The King knew that any nondevotee who attains such opulence merges increasingly into material nature's mode of darkness"

Srimad-Bhagavatam

SB Canto 9

Śukadeva Gosvāmī said: Mahārāja Ambarīṣa, the most fortunate personality, achieved the rule of the entire world, consisting of seven islands, and achieved inexhaustible, unlimited opulence and prosperity on earth. Although such a position is rarely obtained, Mahārāja Ambarīṣa did not care for it at all, for he knew very well that all such opulence is material. Like that which is imagined in a dream, such opulence will ultimately be destroyed. The King knew that any nondevotee who attains such opulence merges increasingly into material nature's mode of darkness.

SB 9.4.15-16, Translation and Purport

Śukadeva Gosvāmī said: Mahārāja Ambarīṣa, the most fortunate personality, achieved the rule of the entire world, consisting of seven islands, and achieved inexhaustible, unlimited opulence and prosperity on earth. Although such a position is rarely obtained, Mahārāja Ambarīṣa did not care for it at all, for he knew very well that all such opulence is material. Like that which is imagined in a dream, such opulence will ultimately be destroyed. The King knew that any nondevotee who attains such opulence merges increasingly into material nature's mode of darkness.

For a devotee material opulence is insignificant, whereas for a nondevotee material opulence is the cause of increasing bondage, for a devotee knows that anything material is temporary, whereas a nondevotee regards the temporary so-called happiness as everything and forgets the path of self-realization. Thus for the nondevotee material opulence is a disqualification for spiritual advancement.