Following are a number of back-translations as well as a sample translation for translators of Joel 2:14:

• Kupsabiny: “Who knows? Maybe he will turn his thoughts and give you gifts/blessings of food so that you can make for him sacrifices of food and wine that is given (as voluntary gifts).” (Source: Kupsabiny Back Translation)
• Newari: “Who knows – he might withhold his punishment,
  and send a blessing instead of this curse.
  Such as a grain offerings and a drink offerings for the LORD your God.” (Source: Newari Back Translation)
• Hiligaynon: “Perhaps the mind/thinking of the LORD your (plur.) God would- just -change and he would-bless your (plur.) harvests, so-that you (plur.) could-offer to him grains and wine.” (Source: Hiligaynon Back Translation)
• Kankanaey: “Perhaps the mind of Yahweh your God will-change and he will show-mercy/kindness-to-(you) and bless you. If/When that is so, there-will again be flour and alcoholic-beverage that you offer to him.” (Source: Kankanaey Back Translation)
• English: “No one knows if he will change his mind about punishing you
  and if instead he will act mercifully toward you.
  If he does that, he will bless you
  by giving you plenty of grain and wine
  in order that you can offer some of those things as sacrifices to him.” (Source: Translation for Translators)