The word "tongue" here is a synecdoche for all the parts of the body using which a person speaks. (See: [[rc://en/ta/man/translate/figs-synecdoche]])
# how will what is said be understood
These passive clauses can be translated in active form. Alternate translation: "how will anyone understand what you have said" (See: [[rc://en/ta/man/translate/figs-activepassive]])