Following are a number of back-translations as well as a sample translation for translators of Isaiah 26:3:

• Kupsabiny: “Oh, God, give peace to the people who hope in you.
  (They) live in peace because they trust in you.” (Source: Kupsabiny Back Translation)
• Newari: “LORD, whoever makes his heart strong,
  you give them complete peace,
  because they trust in you,” (Source: Newari Back Translation)
• Hiligaynon: “‘LORD, you (sing.) will-give, a complete peace to man/person whose mind is centered in you (sing.), for he trusts in you (sing.).” (Source: Hiligaynon Back Translation)
• English: “Yahweh, those who trust in you,
  those who firmly resolve to never doubt you,
  you will enable them to feel perfectly peaceful.” (Source: Translation for Translators)