Chapter 13: Kshetra Kshetrajna Vibhaga Yoga
the field and the knower of the field
Krishna calls the body the field and the self the knower of the field. He lists the qualities that make up real knowledge, among them humility, non-violence, patience and steadiness, and explains that action belongs to nature while the self is the witness. The one who sees the same divine presence in all beings does not harm themselves by harming others.
You are not only what happens in the body and mind. You are the one aware of it.