Following are a number of back-translations as well as a sample translation for translators of Isaiah 30:1:

• Kupsabiny: “God says,
  ‘These people who oppose me are in a bad situation
  those who make plans for themselves,
  and do not ask me.
  Their sins increase
  as they make agreements that I do not accept.” (Source: Kupsabiny Back Translation)
• Newari: “The LORD Almighty has spoken, "Woe to you,
  those disobedient sons and daughters,
  who, having made a plan, put it in motion,
  but it is not from me,
  who make alliances, but not by my Spirit,
  and [who], to such an extent, commit sin upon sin” (Source: Newari Back Translation)
• Hiligaynon: “The LORD said, ‘Woe to my rebellious children. They make plans which do not come from me. They make a covenant which I do- not -allow. Therefore their sins increase even more.” (Source: Hiligaynon Back Translation)