Following are a number of back-translations as well as a sample translation for translators of 1 Chronicles 16:15:

• Kupsabiny: “God keeps/guards his covenant always/forever
  as he has been promising generation after generation.” (Source: Kupsabiny Back Translation)
• Newari: “He will remember
  His covenant forever.
  He has given His covenant
  to thousands of generations.” (Source: Newari Back Translation)
• Hiligaynon: “He will- never -forget his agreement forever/[lit. until whenever], his promise until to the thousand generations.” (Source: Hiligaynon Back Translation)
• English: “He never forgets the agreement that he has made:
  he made a promise that will last for 1,000 generations.” (Source: Translation for Translators)