Following are a number of back-translations as well as a sample translation for translators of Jeremiah 2:22:

• Kupsabiny: “Even if you tried to wash yourselves with soda
  or soap with medicine in,
  you would still have dirt in front of me.
  I God am speaking.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “Even if you (plur.) will-take-a-bath and soap-down very-much/to-the-nth-degree I can- still -see the dirt of your (plur.) sin. I, the Lord GOD, (am) the-(one) saying this.” (Source: Hiligaynon Back Translation)