Following are a number of back-translations as well as a sample translation for translators of Psalm 18:7:

• Chichewa Contempary Chichewa translation, 2002/2016:
  “The earth trembled and there was an earthquake,
  and the foundations of the mountains were shaken;
  they were shaken because He was angry.” (Source: Mawu a Mulungu mu Chichewa Chalero Back Translation)
• Newari:
  “God became angry,
  Then at that time the earthquake struck, the earth trembled,
  the foundations of the mountains cracked.” (Source: Newari Back Translation)
• Hiligaynon:
  “Then the-earth-quaked, and also the foundation of the mountains/hills shook/trembled,
  because you (sing.) (were) angry, LORD.” (Source: Hiligaynon Back Translation)
• Eastern Bru:
  “Then, all the countries on the earth shook. The heads of the mountains also shook, because God felt hot in his gall bladder (was angry).” (Source: Bru Back Translation)
• Laarim:
  “Then the world trembled and shook,
  the mountains shook and trembled,
  because God was angry.” (Source: Laarim Back Translation)
• Nyakyusa-Ngonde (back-translation into Swahili):
  “Ndipo nchi ikatikisika na kutetemeka,
  misingi ya milima ikatikisika,
  ikatikisika kwa sababu Mungu alichukia.” (Source: Nyakyusa Back Translation)
• English:
  “Then the earth quaked/shook strongly;
  the mountains shook very strongly from their centers
  because Yahweh was angry.” (Source: Translation for Translators)