How does Chapter 8 describe the transient and impure nature of the human body?

Chapter 8 of the Sai Satcharitra offers a very stark and detailed description of the human body's transient and impure nature. It compares the body's continuous change to the flame of a lamp, which appears constant but is different every moment, noting that what is seen one moment perishes in the next. The chapter uses graphic imagery, describing the body as a 'washroom of excrement and urine,' a 'foul place of phlegm, pus, and saliva,' and a 'house for worms and insects.' It is also called a 'carriage of flesh, blood, and muscle' and a 'prison for the soul.' Despite these harsh descriptions, Chapter 8 importantly clarifies that this perishable body is the essential means by which one can attain the Lord.