Following are a number of back-translations as well as a sample translation for translators of Psalm 89:15:

• Chichewa Contempary Chichewa translation, 2002/2016:
  “Blessed are those who learn to thank You,
  who walk in the light of the face of Jehovah.” (Source: Mawu a Mulungu mu Chichewa Chalero Back Translation)
• Newari:
  “O LORD, Blessed are those people
  who worship You by singing hymns
  and who live in the light of Your mercy.” (Source: Newari Back Translation)
• Hiligaynon:
  “LORD, blessed (are) the people who have-been-able-to-experience being-loudly-cheerful to you (sing.) with joy,
  who live in the goodness of your (sing.) presence.” (Source: Hiligaynon Back Translation)
• Laarim:
  “LORD, blessed are people who worship you,
  people who walk in the light that stays before you.” (Source: Laarim Back Translation)
• Nyakyusa-Ngonde (back-translation into Swahili):
  “Wamebarikiwa ambao wanakusifu na furaha.
  Ee BWANA, wanajua kuwa unawatunza vizuri.” (Source: Nyakyusa Back Translation)
• English:
  “Yahweh, happy are the people who worship you with joyful shouts,
  who live knowing that you are always watching over them.” (Source: Translation for Translators)