Following are a number of back-translations as well as a sample translation for translators of Isaiah 27:6:

• Kupsabiny: “The house/family of Jacob shall put down its roots firmly,
  in the days that are coming.
  The land of Israel shall progress
  and bring blessing to the whole world.” (Source: Kupsabiny Back Translation)
• Newari: “Now the day is coming [when] Jacob’s descendants, the people of Israel, will take root.
  And Israel will bud, blossom and bear fruit.
  And the whole earth will be full of the fruit.” (Source: Newari Back Translation)
• Hiligaynon: “The day will-come that the people of Israel, the descendants of Jacob, will-take-root like a plant. It will-sprout and will-blossom. It will-bear many fruits that will-fill the whole world.” (Source: Hiligaynon Back Translation)
• English: “There will be a time when the descendants of Jacob/Israeli people will prosper like a plant that has good roots;
  they will be like trees that bud and blossom and bear a lot of fruit;
  what they do will bless all the people in the world.” (Source: Translation for Translators)