Following are a number of back-translations as well as a sample translation for translators of Isaiah 40:28:

• Kupsabiny: “Don’t you know? Have you not heard?
  It is God who created the whole world
  and he lives forever.
  His strength never ends he does not get tired.
  His wisdom has no end.” (Source: Kupsabiny Back Translation)
• Newari: “What! Do you not know?
  What! Have you not heard?
  The LORD is the everlasting God,
  He made the whole world.
  He never feels tired.
  No one can understand his thoughts.” (Source: Newari Back Translation)
• Hiligaynon: “Have- you (plur.) not -known or heard that the LORD is the one without ending God who created the whole world? He does- not -get -tired-(from-work) or weak, and no one can-fathom his thinking/mind.” (Source: Hiligaynon Back Translation)