Following are a number of back-translations as well as a sample translation for translators of Isaiah 57:12:

• Kupsabiny: “You think that you do good deeds.
  But I will expose your habits/lifestyle
  and those things that you are worshipping shall not save you.” (Source: Kupsabiny Back Translation)
• Newari: “You think that what you do is righteousness,
  but I will expose your conduct,
  and it will not be of any benefit to you.” (Source: Newari Back Translation)
• Hiligaynon: “You (plur.) think that what you (plur.) do are very righteous, but I will-show what kind of man you (plur.) really are. And your (plur.) little-gods/false-gods can- not -help you (plur.).” (Source: Hiligaynon Back Translation)