Following are a number of back-translations as well as a sample translation for translators of Isaiah 45:2:

• Kupsabiny: “He is saying, ‘I myself go before you
  to level mountains.
  I shall break doors made of bronze
  and cut locks of metal.” (Source: Kupsabiny Back Translation)
• Newari: “I will go in front of you,
  and I will level the hills.
  I will break the bronze gates to pieces,
  and cut the iron bars.” (Source: Newari Back Translation)
• Hiligaynon: “I will-be- the -one-to-prepare your (sing.) way, and I will-level the mountains. I will-break-down the bronze gates/entrance and its iron bars.” (Source: Hiligaynon Back Translation)