Following are a number of back-translations of Romans 11:34:

• Uma: “‘Who knows the thoughts of God! Who can teach him!'” (Source: Uma Back Translation)
• Yakan: “It says in the holy-book, ‘Who is the one who knows the thinking/mind of God? Who is the one who teaches/instructs him?” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “For there is a written word of God which says, ‘No one can fathom what God is thinking about, and He does not need anyone to give Him advice.” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “Because what God caused-to-be-written says, ‘Is it indeed-the-case that (RQ implying of course not) there is a person who knows God’s thoughts? Is it indeed-the-case that there is someone who has been-able-to-advise him?” (Source: Kankanaey Back Translation)
• Tenango Otomi: “No person is able to come to understand well about God’s thoughts. And no person can say that he taught him what he does.” (Source: Tenango Otomi Back Translation)

For the Old Testament quote, see Isaiah 40:13.