Following are a number of back-translations as well as a sample translation for translators of 2 Chronicles 20:21:

• Kupsabiny: “Jehoshaphat and the leaders of those people advised (them), and then, (they) chose singers to sing to God who is honored and holy. Those people went ahead of the soldiers singing, ‘Praise God because his love is forever.’” (Source: Kupsabiny Back Translation)
• Newari: “After taking advice from the people, Jehoshaphat chose some people to sing songs to the LORD and ‘the glory of his holiness. And going in front of the army, they sang songs like this, —
  "Give thanks to the LORD,
  His love exists forever."” (Source: Newari Back Translation)
• Hiligaynon: “Afterwards he ask advice from the people. Then he chose singers to go-before/[lit. go-in-front-of] them and sing praises to the LORD because of his awesome holiness. This is what they are singing: ‘Give-thanks to the LORD for his love is without end.’” (Source: Hiligaynon Back Translation)
• English: “Then, after consulting with some of the people, he appointed some men to go in front of the army, singing to Yahweh and praising him because of his being holy and wonderful. They were singing,
  ‘Thank Yahweh,
  because he faithfully loves us forever.’” (Source: Translation for Translators)