According to the text, what is the all-pervading divine principle, and why do people often fail to recognize it?

The divine principle, or Brahman, is described as pervading everything in existence, from the creator Brahma down to the smallest blade of grass, encompassing all moving and non-moving things. Chapter 37 states this principle is the same here and in the hereafter. However, people often fail to recognize it because of delusion caused by ignorance. The text explains that although the principle is devoid of worldly qualities, when it is combined with adjuncts (upadhis), it appears to the deluded soul as if it were not Brahman, leading to a sense of separation and misunderstanding.