Following are a number of back-translations as well as a sample translation for translators of Isaiah 42:19:

• Kupsabiny: “Who is blind if not my people
  and who is deaf like my servant?
  Who are blind like the people I have chosen
  or like my servant.” (Source: Kupsabiny Back Translation)
• Newari: “But besides my servant, who [else] is blind?
  Or who is deaf like the messenger I have sent?
  Who is blind like the one I have dedicated to myself?
  Who else is blind like the servant of the LORD?” (Source: Newari Back Translation)
• Hiligaynon: “You (plur.) are my servant and my chosen-one. I am sending you (plur.) as my messengers, but no one can-compare of your (plur.) blindness and deafness.” (Source: Hiligaynon Back Translation)