Following are a number of back-translations as well as a sample translation for translators of Isaiah 45:3:

• Kupsabiny: “I shall give you things that were hidden
  and wealth that is in a hidden place.
  Then, you (sing.) shall know that I am the God of Israel
  who calls you by your name.” (Source: Kupsabiny Back Translation)
• Newari: “I will give you wealth
  that was hidden in an unseen place.
  Then you will know that I am the LORD, the God of Israel.
  am the one who calls you by your own name,” (Source: Newari Back Translation)
• Hiligaynon: “I will-give to you (sing.) the hidden wealth, so-that you (sing.) will-know that I am the LORD, the God of Israel who called you (sing.).” (Source: Hiligaynon Back Translation)