Following are a number of back-translations as well as a sample translation for translators of Isaiah 57:4:

• Kupsabiny: “Who are you mocking/joking?
  Who do you open your mouths
  (and) stick out your tongues?
  You are a disobedient/rebellious people
  and you liked/used to speak lies.” (Source: Kupsabiny Back Translation)
• Newari: “Who are you ridiculing?
  Against whom are you sticking out your tongue?
  Are not you those who act like rebellious people
  and those who act like speak lies?” (Source: Newari Back Translation)
• Hiligaynon: “You (plur.) mock the righteous-ones; you (plur.) twisted-your-lips/mouths and put-out-your-tongue to them. You (plur.) are the descendants of rebels and liars.” (Source: Hiligaynon Back Translation)