Following are a number of back-translations as well as a sample translation for translators of Jeremiah 10:3:

• Kupsabiny: “What these people pray to is useless/futile.
  A person goes to cut down a tree from the bush
  and then he gives (it) to another person to shape (it) with a chisel.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “The custom of those people are without value. They cut a tree in the forest and they have- it -carved by a carpenter.” (Source: Hiligaynon Back Translation)
• English: “The customs of the people of other nations are worthless.
  For example, they cut down a tree in the forest.
  Then a skilled worker/craftsman cuts a section of it and uses his chisel to carve an idol from that section.” (Source: Translation for Translators)