Following are a number of back-translations as well as a sample translation for translators of Psalm 139:21:

• Chichewa Contempary Chichewa translation, 2002/2016:
  “Do I not hate those who hate you, You Jehovah?
  Do I not get disgusted with those who rebel against you?” (Source: Mawu a Mulungu mu Chichewa Chalero Back Translation)
• Newari:
  “O LORD, why should I not hate those who hate You!
  Why shouldn’t I sneer at those who oppose You!” (Source: Newari Back Translation)
• Hiligaynon:
  “LORD, I hate/[lit. am-hot-about] the ones (who) hate/[lit. are-hot-about] you (sing.).
  I detest those (who) go-against you (sing.).” (Source: Hiligaynon Back Translation)
• Laarim:
  “LORD, you know that I hate people who hate you,
  and I reject those who reject you.” (Source: Laarim Back Translation)
• Nyakyusa-Ngonde (back-translation into Swahili):
  “Je, ee BWANA, nisiwachukie ambao wanakuchukia wewe?
  Nisiwadharau ambao wanakuasi?” (Source: Nyakyusa Back Translation)
• English:
  “Yahweh, I certainly hate those who hate you!
  And I despise those who rebel against you.” (Source: Translation for Translators)