In response to Arjun's request to describe in detail mystic power and opulence, Krishna says, "I will now briefly describe My divine glories to you, for there is no end to their detail" (10.19). While acceding to Arjun's request, Krishna cautions him that there is no end to HIS divine glories. The point to be noted is that there is no way to describe this vast existence which is infinite and further, it constantly keeps evolving and changing with time.
Referring to how the universe is balanced, Krishna earlier said that all the world is pervaded by HIM in the un-manifested form (9.4) and the entire universe is strung on HIM like gems on a string (7.7). Referring to living entities Krishna says, "I am 𝙖𝙩𝙢𝙖 (soul) in the heart of all creatures. I am their Beginning, Middle, and also the end" (10.20).
Each one of us possesses HIS divinity ( 𝙖𝙩𝙢𝙖 ), though we may find it difficult to identify it in ourselves as well as in others. Another indication is that this divinity (creativity) is responsible for the creation, growth and final destruction of each of the creatures.
Firstly, our senses evolved to see the differences in the outer world. This ability is useful for our survival as it helps us to protect ourselves by identifying unsafe situations. Beyond a point, this ability becomes a crutch and prevents us from seeing divinity (unity).
Secondly, divinity is covered by the manifested. Our senses are capable of sensing the manifested and miss out on the un-manifested divinity.
Krishna says that he is the beginning, middle and end of all creatures. This gave rise to the concept of ' 𝙩𝙧𝙞𝙢𝙪𝙧𝙩𝙝𝙞 ' - Brahma for creation which requires knowledge; Vishnu for growth or maintenance which requires resources; Shiva for destruction which requires energy. Thus, HE is the ultimate giver and the ultimate taker.