Following are a number of back-translations as well as a sample translation for translators of Isaiah 9:15:

• Kupsabiny: “The heads of Israel are the leaders
  and those powerful men who were feared.
  And the tails are those prophets that
  tell people lies.” (Source: Kupsabiny Back Translation)
• Newari: “The elders and the honor people are the head,
  and the prophets who teach falsehoods [lit. matters that are not true] are the tail.” (Source: Newari Back Translation)
• Hiligaynon: “The head was the ones-who-rule and the honorable people, and the tail was the lying prophets.” (Source: Hiligaynon Back Translation)
• English: “But I, Yahweh, say that an axe certainly cannot boast about being stronger than the person who uses it,
  and a saw is not greater than the person who uses it.
  A rod cannot control the one who holds it ,
  and a wooden club cannot lift up a person.
  So the king of Assyria should not boast that he has done these things with his own wisdom and strength.” (Source: Translation for Translators)