Following are a number of back-translations as well as a sample translation for translators of Isaiah 65:12:

• Kupsabiny: “I have prepared for you to be destroyed by sword
  and you shall all be killed,
  because you refused to respond to me when I called you
  and you did not hear when I spoke to you.
  You did evil things to me
  and loved/accepted things that I am not happy with.” (Source: Kupsabiny Back Translation)
• Newari: “I will make the sword your fate,
  and you will all bow down to be killed.
  For when I called you did not answer.
  When I talked, giving ear, you did not listen.
  You did that very work which is not good in my eyes [lit.: before me],
  and you chose to do work that does not please me."” (Source: Newari Back Translation)
• Hiligaynon: “Your (plur.) destiny is death, and you (plur.) of all will-die. For when I called you (plur.) did- not -answer; when I spoke you (plur.) did- not -listen. You (plur.) have-done wickedness before me; and whatever I am not pleased, is what you (plur.) are-doing.” (Source: Hiligaynon Back Translation)
• English: “It is I, not Meni, who will decide/say what will happen to you;
  you will all be slaughtered by swords.
  That will happen because you did not answer
  when I called out to you.
  I spoke to you,
  but you did not pay attention.
  Instead, you did things that I said are evil;
  you chose to do things that do not please me.” (Source: Translation for Translators)