Following are a number of back-translations as well as a sample translation for translators of Psalm 95:8:

• Chichewa Contempary Chichewa translation, 2002/2016:
  “do not harden your hearts like how you did at Meribah,
  like you did that day at Massah in the wilderness.” (Source: Mawu a Mulungu mu Chichewa Chalero Back Translation)
• Newari:
  “Don’t you be obstinate
  like your ancestors became obstinate at Meriba
  and one day in the wilderness of Massah.” (Source: Newari Back Translation)
• Hiligaynon:
  “[you (plur.)] do- not -harden/[lit. make-hard] your (plur.) hearts
  like your (plur.) ancestors/[lit. old-ones] did a-long-time-ago/in-time-past there at Meriba,
  also like when they (were) there in Masa in the desert.” (Source: Hiligaynon Back Translation)
• Laarim:
  “God said that, ‘Do not refuse me
  like your ancestors rejected me in the land of Meribah,
  like they refused me in desert of Massah.” (Source: Laarim Back Translation)
• Nyakyusa-Ngonde (back-translation into Swahili):
  “BWANA alisema, ‘Msiwe na mioyo migumu,
  kama vile babu zenu kule katika Meriba,
  kama vile siku ile katika Masa, jangwani.” (Source: Nyakyusa Back Translation)
• English:
  “He says, ‘Do not become stubborn like your ancestors did at Meribah,
  and like they did at Massah in the desert.” (Source: Translation for Translators)