Following are a number of back-translations as well as a sample translation for translators of Psalm 37:30:

• Chichewa Contempary Chichewa translation, 2002/2016:
  “The mouth of a righteous person speaks wise (things),
  and his tongue speaks righteous (things).” (Source: Mawu a Mulungu mu Chichewa Chalero Back Translation)
• Newari:
  “From the mouths of good people always comes knowledge,
  his tongue always speaks truth.” (Source: Newari Back Translation)
• Hiligaynon:
  “What the righteous say has wisdom/knowledge and is-right.” (Source: Hiligaynon Back Translation)
• Eastern Bru:
  “Out of the mouth of righteous people comes wise thoughts and they speak what is right and good.” (Source: Bru Back Translation)
• Laarim:
  “The mouth of a good person is talking about the matter of wisdom,
  and his tongue is talking about the right matter.” (Source: Laarim Back Translation)
• Nyakyusa-Ngonde (back-translation into Swahili):
  “Kinywa cha mnyofu kinasema maneno ya hekima,
  ulimi wake unasema ya ukweli.” (Source: Nyakyusa Back Translation)
• English:
  “Righteous people give wise advice to others, and they say what is just/fair.” (Source: Translation for Translators)