Following are a number of back-translations as well as a sample translation for translators of Ecclesiastes 7:14:

• Kupsabiny: “When things go well, be happy
  and/but when trouble comes to you know that
  God gives joy
  and he also send trouble.
  So, no person knows
  what will happen in the coming days.” (Source: Kupsabiny Back Translation)
• Newari: “Rejoice during good times
  but think during bad times –
  for God has made them both.
  Since it is like this, it is not possible for people to find out things that will happen to them later on.” (Source: Newari Back Translation)
• Hiligaynon: “If your (sing.) situation is good, [you (sing.)] be-happy. But if you (sing.) are in difficulty, remember that God does not only give a good situation but also difficulties. Therefore we (incl.) do- not -know what will-happen in the future.” (Source: Hiligaynon Back Translation)
• English: “When things are going well for you, be happy,
  and when things are not going well for you,
  remember that God is the one who causes good things to happen
  and who also causes disasters.” (Source: Translation for Translators)