4 They were told not to harm the grass of the earth or any plant or tree, but only those people who did not have the seal of God on their foreheads.

Read Revelation 9:4 Using Other Translations

And it was commanded them that they should not hurt the grass of the earth, neither any green thing, neither any tree; but only those men which have not the seal of God in their foreheads.
They were told not to harm the grass of the earth or any green plant or any tree, but only those people who do not have the seal of God on their foreheads.
They were told not to harm the grass or plants or trees, but only the people who did not have the seal of God on their foreheads.