Following are a number of back-translations as well as a sample translation for translators of Isaiah 48:15:

• Kupsabiny: “I am the one who has called (him) and I have spoken to (him).
  I have led (him) and he shall prosper in his plans.” (Source: Kupsabiny Back Translation)
• Newari: “Yes, I have really said this.
  I have called him.
  I will bring him,
  and he will succeed in his work.” (Source: Newari Back Translation)
• Hiligaynon: “I myself who-spoke and called him. I will-command him and he will-be-victorious in what he will-be-doing.” (Source: Hiligaynon Back Translation)