Following are a number of back-translations as well as a sample translation for translators of Isaiah 18:3:

• Kupsabiny: “Please, let every person in the world see
  and every one on this earth listen!
  See (plur.) the banner/flag that has been raised up on the hill,
  listen to the sound of a horn.” (Source: Kupsabiny Back Translation)
• Newari: “O [you] people who live on the earth, listen!
  Look at the signal flag [lit.: flag of a sign] on the mountain peak!
  Listen to the sound of the trumpet being blown!” (Source: Newari Back Translation)
• Hiligaynon: “You (plur.) all who dwell in the world, you (plur.) watch-out for the raising of the banner on top of the mountain, and you (plur.) listen to the sound of the trumpet.” (Source: Hiligaynon Back Translation)