en_tn/deu/17/06.md

At the mouth of two witnesses, or three witnesses, will he who must die be put to death

Here "the mouth" represents the testimony of a witness. This can be translated in active form. Alternate translation: "If two or three witnesses speak against the person, then you must execute him" (See: rc://en/ta/man/translate/figs-metonymy and rc://en/ta/man/translate/figs-activepassive and rc://en/ta/man/translate/translate-numbers)

but at the mouth of only one witness he must not be put to death

Here "the mouth" represents the testimony of a witness. This can be translated in active form. Alternate translation: "but if only one person speaks against him, then you must not execute him" (See: rc://en/ta/man/translate/figs-metonymy and rc://en/ta/man/translate/figs-activepassive)