Following are a number of back-translations as well as a sample translation for translators of Numbers 23:19:

• Kupsabiny: “God is not a man who deceives/lies,
  and he does not change his thoughts.
  Did God promise something and (then) not do it?
  Or is there anything he has said, and he did not make it happen?” (Source: Kupsabiny Back Translation)
• Newari: “God is not like men, [He] does not lie [lit.: speak false messages].
  He is not human, He does not change his mind.
  Has He ever spoken a word [and] it did not take place?
  Has He ever made a promise that [He] did not fulfill?” (Source: Newari Back Translation)
• Hiligaynon: “God is not a man that he would-lie or would-change his mind. Does he speak that he does- not -do? Does he promise that he does- not -fulfill?” (Source: Hiligaynon Back Translation)
• English: “God is not a human being.
  Humans lie, but God never lies.
  He never changes his mind/thoughts, as humans do.
  Whatever he has said that he will do, he does.” (Source: Translation for Translators)