Following are a number of back-translations as well as a sample translation for translators of Isaiah 30:18:

• Kupsabiny: “But God waits for you to cry to him so that he can show mercy to you.
  God is exalted and he will do good things for you.
  He stands on truth/justice
  and those who rely on him will be blessed.” (Source: Kupsabiny Back Translation)
• Newari: “Still, [He] intends to be gracious to you.
  He rises up to have compassion for you,
  for the LORD is a God who does justice.
  Blessed is the one who lives, waiting for Him.” (Source: Newari Back Translation)
• Hiligaynon: “But the LORD is-waiting that you (plur.) will-come-near to him so-that he will-have-mercy on you (plur.). He is ready to show his concern to you (plur.). For the LORD is a righteous God, and blessed are all who trust in him.” (Source: Hiligaynon Back Translation)
• English: “But Yahweh wants to be kind to you;
  he desires to show you that he is merciful.
  Do not forget that Yahweh is a God who acts justly;
  he is pleased with those who patiently trust in him.” (Source: Translation for Translators)