Following are a number of back-translations as well as a sample translation for translators of Proverbs 21:30:

• Kupsabiny: “Even if a person is very wise, (he) cannot defeat/overpower God.” (Source: Kupsabiny Back Translation)
• Newari: “No human wisdom or plot
  can succeed against the Lord.” (Source: Newari Back Translation)
• Hiligaynon: “There is no wisdom, understanding, or counsel that can-equal the LORD.” (Source: Hiligaynon Back Translation)
• Kankanaey: “No matter (lit. even if) how-much is the skill/intelligence and how-many are the plans of a person, he is not able-to-defeat God.” (Source: Kankanaey Back Translation)
• English: “Thinking that we are wise, and that we understand many things, and that we have good insight,
  does not help us if Yahweh is acting against/not pleased with us.” (Source: Translation for Translators)