Following are a number of back-translations as well as a sample translation for translators of Isaiah 61:2:

• Kupsabiny: “He sent me to come and tell people that
  these are days when God shall accept them.
  I am saying that sinners shall be punished
  and those who mourn shall be comforted.” (Source: Kupsabiny Back Translation)
• Newari: “He has sent me to proclaim the year for the time for LORD showing mercy,
  and the day for our God to take vengeance,
  and to give consolation to all who mourn,” (Source: Newari Back Translation)
• Hiligaynon: “He also sent me to proclaim that this is now the time that the LORD will-save his people and punish their enemies. He even sent me to comfort the ones-who-are-mourning in Jerusalem, so-that instead they will-put ash on their head to show that they are-mourning, they will-put a crown-like flower on their head or they will-rub their heads with oil, to show that they are happy. They will-be like a strong oak tree, which was-planted by the LORD. They will-be-called righteous for the honor of the LORD.” (Source: Hiligaynon Back Translation)