Following are a number of back-translations as well as a sample translation for translators of Proverbs 20:8:

• Kupsabiny: “If/When a ruler/king declares things/judges the people on a matter,
  he evaluates/sifts in order to know the truth and the crooked/wrong.” (Source: Kupsabiny Back Translation)
• Newari: “When the king sits on the throne to judge,
  he winnows out all the evil.” (Source: Newari Back Translation)
• Hiligaynon: “When a king judges a case, he really makes-sure that the one who did an evil (thing) will-be-known.” (Source: Hiligaynon Back Translation)
• Kankanaey: “At the time-of-judging of the king, he weighs all the evidence (lit. that-which-is-used-to-confirm) so-that he will separate evil from the good.” (Source: Kankanaey Back Translation)
• English: “A king who sits on his throne to judge people
  can easily find out what things that people have done are good and what things are evil.” (Source: Translation for Translators)