The spiritual world, which consists of three fourths of the Lord's energy, is situated beyond this material world, and it is especially meant for those who will never be reborn
SB Canto 2
The spiritual world, which consists of three fourths of the Lord's energy, is situated beyond this material world, and it is especially meant for those who will never be reborn. Others, who are attached to family life and who do not strictly follow celibacy vows, must live within the three material worlds.
The climax of the system of varṇāśrama-dharma, or sanātana-dharma, is clearly expressed here in this particular verse of Śrīmad-Bhāgavatam. The highest benefit that can be awarded to a human being is to train him to be detached from sex life, particularly because it is only due to sex indulgence that the conditioned life of material existence continues birth after birth. Human civilization in which there is no control of sex life is a fourth-class civilization because in such an atmosphere there is no liberation of the soul encaged in the material body. Birth, death, old age and disease are related to the material body, and they have nothing to do with the spirit soul. But as long as the bodily attachment for sensual enjoyment is encouraged, the individual spirit soul is forced to continue the repetition of birth and death on account of the material body, which is compared to garments subjected to the law of deterioration.