Following are a number of back-translations as well as a sample translation for translators of Isaiah 25:6:

• Kupsabiny: “The God of authority shall prepare a feast
  in Zion for all countries.
  A feast of good food,
  and delicious wine.” (Source: Kupsabiny Back Translation)
• Newari: “Here on Mt Zion the LORD Almighty
  will prepare a feast for all the nations of the earth.
  That feast will be full of very delicious things
  and the best wine.” (Source: Newari Back Translation)
• Hiligaynon: “Here in Mount Zion, the LORD Almighty will-prepare a feast for all the peoples. Good food and drinks is what he will-prepare.” (Source: Hiligaynon Back Translation)