Following are a number of back-translations as well as a sample translation for translators of Psalm 71:18:

• Chichewa Contempary Chichewa translation, 2002/2016:
  “Even when I am old and with gray hair
  do not throw me away You God,
  until I announce your power
  to all the future generations.” (Source: Mawu a Mulungu mu Chichewa Chalero Back Translation)
• Newari:
  “O God, I have now become an old man
  My hair is already white.
  But until I have proclaimed Your amazing work to this new generation,
  Do not forsake me.” (Source: Newari Back Translation)
• Hiligaynon:
  “And even-(when) I (am) now old and have-gray-hair, do- not -forsake/abandon me, O God,
  while I tell-the-news-about your (sing.) power and strength to the next generation.” (Source: Hiligaynon Back Translation)
• Laarim:
  “Even if I am old and having grey hair,
  God, do not leave me,
  until I tell your power,
  to children who are still coming.” (Source: Laarim Back Translation)
• Nyakyusa-Ngonde (back-translation into Swahili):
  “Hata kama nimezeeka niko na mvi kichwani,
  ee Mungu, usiniache peke yangu,
  mpaka niwambie wote wa katika vizazi vyote ambavyo vitakuja,
  habari za matendo yako na nguvu zako.” (Source: Nyakyusa Back Translation)
• English:
  “And now, God, when I am old and my hair is gray,
  do not abandon me.
  Stay with me while I continue to proclaim to my children and grandchildren that you are very powerful!” (Source: Translation for Translators)