Following are a number of back-translations as well as a sample translation for translators of Isaiah 45:23:

• Kupsabiny: “I swear that
  the words that I have promised are straight/correct and they will come to pass.
  Every person shall bow to me
  and everyone shall decide to honor me.” (Source: Kupsabiny Back Translation)
• Newari: “I have sworn by my name,
  Being trustworthy, I have made a proclamation, a word from my mouth,
  which I will not take back —
  All people
  will kneel down before me.
  And everyone
  will swear allegiance to me.” (Source: Newari Back Translation)
• Hiligaynon: “I have-sworn to myself, and what I have-spoken are trustworthy and can- not -be-changed: All people will-kneel-down to me and they will-swear that they will-be-loyal to me.” (Source: Hiligaynon Back Translation)