Following are a number of back-translations as well as a sample translation for translators of Isaiah 47:6:

• Kupsabiny: “I was angry with my people of Israel
  and I punished (them).
  I gave you to rule over those people
  but you refused to show mercy.
  You beat even the old people
  sending (them) to do a heavy work.” (Source: Kupsabiny Back Translation)
• Newari: “I had become angry with my people,
  and I made my own people unclean.
  I gave them into your hands,
  but you showed them no compassion.
  You made even the old men carry heavy yoke.” (Source: Newari Back Translation)
• Hiligaynon: “I was angry with my people whom I possessed/owned, and I rejected them. So I delivered them into your (sing.) hand, and you (sing.) did- not -show-mercy to them. Even the aged/[lit. old people] among them you (sing.) violated (them).” (Source: Hiligaynon Back Translation)