Following are a number of back-translations as well as a sample translation for translators of Jeremiah 4:16:

• Kupsabiny: “They have come to tell people and announce to Jerusalem that enemies have started a raid from a distant land. They are preparing to fight in a bad way the cities that are in Judah.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “They were-commanded to warn the nations and Jerusalem that there are soldiers who are-attacking from a distant place who are-provoking/challenging war against the towns of Juda.” (Source: Hiligaynon Back Translation)
• English: “Tell this to the people in other nations
  but also announce it in Jerusalem:
  Yahweh says, ‘An army is coming to Jerusalem from far away;
  they will shout a battle-cry against the cities in Judah.” (Source: Translation for Translators)