The atman in this is just an illusion in imagination. I think i am this conglomeration. No, there's no self there. There's no such thing. As i say, there's just this conglomeration playing around. The understanding ossulates between being and specific name and form. That's what we think of ourselves now. We are being pushed back to the being. Yama is trying to make us appreciate, from specific, taught feelings, emotions, to privateness,. From things small and big, to the existence itself.
Swami Sarvapriyananda teaches the Katha Upanishad, one of India's most revered texts which is also a part of the Vedas. It is a collection of philosophical poems representing a conversation between the sage Naciketas and Yama (god of death). They discuss the nature of Atman, Brahman and Moksha(liberation).