Following are a number of back-translations as well as a sample translation for translators of Isaiah 42:16:

• Kupsabiny: “I shall go ahead of my blind (people) to go on a road that they have not gone before
  and I shall lead (them) on a path that they have not reached/travelled on.
  I shall turn the darkness they have to become light,
  and smoothen where it is rough to be a level/spread out land.
  This is what I shall do
  and never abandon (them).” (Source: Kupsabiny Back Translation)
• Newari: “I will take my blind people on a path they have never gone [on].
  Showing and showing them the path, I will take them along a path they do not know.
  I will [cause] the dark [to become] light for them
  and I will cause the places having ditches to become level.
  These deeds I will do.
  I will not abandon them.” (Source: Newari Back Translation)
• Hiligaynon: “I will-lead my people who are blind of the truth to the way they have- not -gone yet. I will-light/shine their dark way, and I will-level the rough places which they will-travel/[lit walk-on]. I will-do these things, and I will- not -reject them.” (Source: Hiligaynon Back Translation)