Following are a number of back-translations as well as a sample translation for translators of Isaiah 35:4:

• Kupsabiny: “Tell those who have lost hope,
  ‘Do not fear, be strong.
  See, your God is coming
  to punish your enemies.
  (He) shall come to save you.’” (Source: Kupsabiny Back Translation)
• Newari: “Say to those who have fear in their hearts,
  "Have courage, do not be afraid.
  Your God will come to punish the enemies,
  and [He] will come to deliver you with God’s revenge."” (Source: Newari Back Translation)
• Hiligaynon: “Say to those who are scared, ‘You (plur.) be-strong and do- not -be-afraid. Your (plur.) God is-coming to take-revenge to your (plur.) enemies, and he will-save you (plur.).’” (Source: Hiligaynon Back Translation)
• English: “Then one of Sennacherib’s important officials told them to take this message to Hezekiah:
  This is what the King of Assyria, the great king, says: ‘What are you trusting in to rescue you?” (Source: Translation for Translators)