Following are a number of back-translations as well as a sample translation for translators of Isaiah 38:12:

• Kupsabiny: “My life has been uprooted
  to end there.
  I have folded my life like
  the tent/shelter of a shepherd.
  I am like a granary that has been plaited
  and is abandoned before it is finished.
  I was thinking that you might destroy me,
  take me out from the light and put me in darkness.” (Source: Kupsabiny Back Translation)
• Newari: “Like a shepherd’s tent thrown down,
  my life has been taken from me.
  My life had been rolled up like from cloth from one who weaves [on a] loom.
  and he has cut me from the loom.
  All day and all night you brought my life to an end.” (Source: Newari Back Translation)
• Hiligaynon: “My life has almost been lost like a tent of the one-who-watches-over the sheep which has-been-blown-away. I thought my life will- now -be-cut-off like a cloth that has-been-cut-off from the loom. From morning to evening, I waited that you (sing.) are now to end-up my life.” (Source: Hiligaynon Back Translation)
• English: “It is as if my life has been taken away
  like a tent whose pegs have been pulled up by a shepherd and taken away.
  My time to live has been cut short,
  like a piece of cloth that a weaver cuts and rolls up after he has finished weaving a cloth.’
  Suddenly, it seemed that my life was ending.” (Source: Translation for Translators)