Following are a number of back-translations as well as a sample translation for translators of Jeremiah 2:28:

• Kupsabiny: “But hey, where are those things of yours
  that you have formed so they could help you?
  You shall call (them) to come and save you from this trouble
  if they are really able!
  Don’t you have many things that you trust in,
  as many as there are cities in Judah?” (Source: Kupsabiny Back Translation)
• Hiligaynon: “Where is now the gods which you (plur.) made for yourselves? Let- them -come-near if (it is) true they can save you (plur.) from your (plur.) difficulty. You (plur.) have so many gods, as numerous as the towns of Juda.” (Source: Hiligaynon Back Translation)
• English: “Why do you not cry out to the gods that you made?
  You have as many gods as you have cities and towns in Judah.
  So why do you not plead with them to rescue you
  when you experience disasters?” (Source: Translation for Translators)