Following are a number of back-translations as well as a sample translation for translators of Isaiah 28:29:

• Kupsabiny: “It is God who shows people
  how to prepare/handle food/crops.
  God gives wisdom
  and he gives good advice to people.” (Source: Kupsabiny Back Translation)
• Newari: “All this comes from the LORD Almighty,
  who gives very good counsel and is full of wisdom.” (Source: Newari Back Translation)
• Hiligaynon: “This wisdom is from the LORD Almighty. His advice is very good and his wisdom is very great.” (Source: Hiligaynon Back Translation)
• English: “The Commander of the armies of angels
  gives us wonderful advice about how to do things; he causes us to be very wise.
  So what the farmers do is very smart/wise, but what your leaders are doing is very stupid.” (Source: Translation for Translators)