Following are a number of back-translations as well as a sample translation for translators of Psalm 50:21:

• Chichewa Contempary Chichewa translation, 2002/2016:
  “You have done these and I was quiet;
  you thought that I am equal to you
  but I will rebuke you
  and I will oppose you in your eyes.” (Source: Mawu a Mulungu mu Chichewa Chalero Back Translation)
• Newari:
  “Even though you did like this I didn’t say anything.
  You thought that I did not know anything.
  Now I will accuse you,
  and I will expose your faults one by one.” (Source: Newari Back Translation)
• Hiligaynon:
  “When you (plur.) have-done these things, I just kept-silent,
  and you (plur.) thought that I (was) just like you (plur.).
  But I will-rebuke you (plur.) and I will-show you (plur.) how wicked you (plur.) are.” (Source: Hiligaynon Back Translation)
• Laarim:
  “You did these matters, and I am keeping quiet,
  you think that, I am staying with you.
  But now, I will rebuke you,
  and accuse you in your face.” (Source: Laarim Back Translation)
• Nyakyusa-Ngonde (back-translation into Swahili):
  “Umefanya hayo yote, mimi niko kimya.
  Je, unasema mimi niko kama wewe?
  Lakini sasa nakukemea,
  nakaripia peupe.’” (Source: Nyakyusa Back Translation)
• English:
  “You did all those things, and I did not say anything to you,
  so you thought that I was a sinner just like you.
  But now I rebuke you and accuse you, right in front of you.” (Source: Translation for Translators)