Chapter 37 mentions that the same principle pervades everything 'from the creator down to the smallest blade of grass.' How does the text explain the appearance of differentiation and delusion in the world?

Chapter 37 explains a core non-dualistic philosophy. It posits that a single, universal principle, Brahman, pervades all of existence, from the creator Brahma to the smallest blade of grass, in all moving and non-moving things. This principle is the same in this world and the hereafter. The text clarifies that this principle is inherently devoid of worldly qualities. However, as described in Chapter 37, when this principle is combined with adjuncts (upadhis) and viewed by a soul that is deluded by ignorance, it appears to be something other than Brahman. This delusion is the cause of perceiving separation and differentiation in a reality that is fundamentally unified.