Following are a number of back-translations as well as a sample translation for translators of Isaiah 21:4:

• Kupsabiny: “My heart is jumping
  and I began to tremble.
  I used to wait for the day to end and I go to sleep,
  but when the day ends I am again much afraid.” (Source: Kupsabiny Back Translation)
• Newari: “My heart had gotten out of control.
  Being afraid, I have been trembling and trembling.
  The evening time that I had been longing for —
  even that had become a threatening [lit.: dangerous] terror for me.” (Source: Newari Back Translation)
• Hiligaynon: “My chest beats, and I tremble with fear. I can- not -rest at night, for I am still nervous.” (Source: Hiligaynon Back Translation)
• English: “I cannot think straight/correctly, and I tremble.
  I was eager for it to be nighttime,
  but now it is night, and I am horrified.” (Source: Translation for Translators)