The tongue is a metonym for what people say. James calls it a fire because of the great damage it can do. Alternate translation: "The tongue is like a fire" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-metaphor]])
The enormous effects of sinful speaking are spoken of as if they were a world by themselves. (See: [[rc://en/ta/man/translate/figs-metaphor]])
# It stains the whole body
Sinful speaking is spoken of metaphorically as if it stained one's body. And becoming unacceptable to God is spoken of as if it were dirt on the body. (See: [[rc://en/ta/man/translate/figs-metaphor]])
The phrase "course of life" refers to a person's entire life. Alternate translation: "it ruins a person's entire life" (See: [[rc://en/ta/man/translate/figs-metaphor]])
The word "itself" refers to the tongue. Also, here "hell" refers to the powers of evil or to the devil. This can be stated in active form. Alternate translation: "life because the devil uses it for evil" (See: [[rc://en/ta/man/translate/figs-activepassive]] and [[rc://en/ta/man/translate/figs-metaphor]])