Following are a number of back-translations as well as a sample translation for translators of Isaiah 21:6:

• Kupsabiny: “God said to me,
  ‘Appoint a guard,
  and tell (him) to announce what he sees.” (Source: Kupsabiny Back Translation)
• Newari: “The LORD spoke to me like this,
  "Go, put out a sentinel.
  Whatever he sees let him report it [lit.: tell about it].” (Source: Newari Back Translation)
• Hiligaynon: “The LORD said to me, ‘You (sing.) put/place a guard in the city, and have- him -tell what he sees.” (Source: Hiligaynon Back Translation)
• English: “Then Yahweh said to me,
  ‘Put a watchman on the wall of Jerusalem,
  and tell him to shout/proclaim what he sees.” (Source: Translation for Translators)