Following are a number of back-translations as well as a sample translation for translators of Isaiah 25:1:

• Kupsabiny: “Oh, God, you are my God.
  I honor you and praise your name,
  because you have done amazing things
  and you truly fulfilled everything that you prepared long ago.” (Source: Kupsabiny Back Translation)
• Newari: “O LORD, you are my God,
  I will honor your name
  and I will praise your name,
  for you have done amazing work —
  work that you had planned long ago.” (Source: Newari Back Translation)
• Hiligaynon: “LORD, you (sing.) are my God! I will-praise and honor you (sing.), for what you (sing.) have-done are really marvelous. You (sing.) surely have-fulfilled what you (sing.) have-planned long-time-ago.” (Source: Hiligaynon Back Translation)