According to the Satcharita, what is the fundamental nature of birth and death, and how does this apply to enlightened saints?

Chapter 43 explains that, in a general sense, birth is simply the union of the body and senses, while death is their separation. However, for great souls who incarnate by their own will for the welfare of devotees, these concepts are considered false imaginations. The text posits that such beings have effectively conquered mortality, placing their feet 'on the head of Time.' For them, who take various avatars out of a desire for the devotees' well-being, birth and death do not touch them. Death is viewed as a characteristic of the soul's nature and a state of happiness for the body, which these enlightened beings transcend.