Following are a number of back-translations as well as a sample translation for translators of Proverbs 26:26:

• Kupsabiny: “Although a black stomached person may try to hide it inside,
  it will be revealed where there are many people (in public).
  His word may seem to be good,
  but do not believe (him), because (he) is envious to finish (it) (full of envy).” (Source: Kupsabiny Back Translation)
• Newari: “As for their bad thoughts, they hide them,
  but their evil deeds are visible to everyone.” (Source: Newari Back Translation)
• Hiligaynon: “(It is) possible that he will-act-in-disguise so-that he can hide his anger, but still all will-see his bad deeds.” (Source: Hiligaynon Back Translation)
• Kankanaey: “It-is-possible for him to cover-up his motives, but at its end people will find-out just the same.” (Source: Kankanaey Back Translation)
• English: “They try to deceive people to cause them to think that they do not hate that person,
  but in a public meeting, the people will find out the evil things that they have done.” (Source: Translation for Translators)