Following are a number of back-translations of Revelation 9:4:

• Uma: “Those grasshoppers were not allowed to persecute/bother grass or trees or planted things. What they were allowed to persecute was just people who did not have the sign of the seal of God on their foreheads.” (Source: Uma Back Translation)
• Yakan: “They had been admonished/instructed not to destroy the weeds or the trees or whatever useful-plants in the world. That is what they should attack, the humans, whoever did not have the mark of God on his forehead.” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “They were commanded not to destroy the grass or anything that grows, or trees, but rather they could only do harm to people whose foreheads were not marked with the mark of God.” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “It was commanded to them that they not destroy the grass/weeds and trees and other plants, but rather that they only injure the collective-people who were not marked on their foreheads with the mark of God.” (Source: Kankanaey Back Translation)
• Tagbanwa: “However they were told emphatically not to destroy the grass/weeds, the trees or any cultivated-plants. Only the people without God’s mark on their foreheads were to be caused suffering by those locusts.” (Source: Tagbanwa Back Translation)
• Tenango Otomi: “They were told not to damage the green things here on earth. Neither were they to harm the trees. Rather they were told to sting the people who did not have the seal of God on their foreheads.” (Source: Tenango Otomi Back Translation)