This was a valid problem upon returning to their homeland from various nations of the world.
(Zep 3:8-10) "Therefore wait for Me," says the LORD, "Until the day I rise up for plunder; My determination is to gather the nations To My assembly of kingdoms, To pour on them My indignation, All my fierce anger; All the earth shall be devoured With the fire of My jealousy. {9} "For then I will restore to the peoples a pure language, That they all may call on the name of the LORD, To serve Him with one accord. {10} From beyond the rivers of Ethiopia My worshipers, The daughter of My dispersed ones, Shall bring My offering.