Final answer:
The phrase suggests that Danny is dying, and his soul is believed to be leaving his body; a common representation of death in literature.
Step-by-step explanation:
The phrase "It's Danny's soul that's passin now," refers to the moment when a character named Danny is dying or has just died, and their soul is believed to be leaving their body. This concept is often a symbolic or literal representation of death in literature, evoking imagery of a person's spirit moving on to the afterlife or ceasing to exist in the physical realm. These excerpts from various literary works deal with the theme of death, dying, and the soul's journey, as well as the emotional experiences associated with these events.