Following are a number of back-translations as well as a sample translation for translators of Isaiah 40:13:

• Kupsabiny: “Who has given advice to God,
  or who has shown him what to do?” (Source: Kupsabiny Back Translation)
• Newari: “‘Who has known the mind of the LORD?
  Or who has been his counselor?’” (Source: Newari Back Translation)
• Hiligaynon: “Who knows the thinking/mind of the LORD? Who can-teach him what he should do?” (Source: Hiligaynon Back Translation)