Following are a number of back-translations as well as a sample translation for translators of 1 Samuel 2:3:

• Kupsabiny: “No one should be involved in looking down upon others,
  or be throwing rude words,
  because God is the one who knows everything
  and he is the one who will judge everyone for what (he/she) does.” (Source: Kupsabiny Back Translation)
• Newari: “Stop acting so arrogantly [lit: give up your doing [such] arrogance.]
  And stop talking so pretentiously [lit.: And stop talking, being [so] boastful.]
  For the LORD, who knows all things, is God.
  And [He] will judge all the work that people do. ” (Source: Newari Back Translation)
• Hiligaynon: “No-one can-be-proud or can-boast because the LORD (is) the God who knows everything, and he ponders/consider what a person does.” (Source: Hiligaynon Back Translation)
• English: “You people who oppose God, stop boasting!
  Yahweh is a God who knows everything,
  and he will evaluate/judge everyone’s actions.
  So don’t speak so arrogantly!” (Source: Translation for Translators)