They were told not to harm the grass of the earth or any green plant or any tree, but only those people who did not have the seal (sphragida | σφραγῖδα | acc sg fem) of God on their foreheads.
Then I saw another angel ascending from the rising of the sun, with the seal (sphragida | σφραγῖδα | acc sg fem) of the living God. And he called out in a loud voice to the four angels who had been given power to harm the earth and the sea,
And when he opened the sixth seal (sphragida | σφραγῖδα | acc sg fem), I looked, and there was a great earthquake; the sun became as black as sackcloth made of hair, the entire moon became like blood,
And when he opened the fifth seal (sphragida | σφραγῖδα | acc sg fem), I saw under the altar the souls of those who had been slain for the word of God and for the witness they had borne.
And when he opened the third seal (sphragida | σφραγῖδα | acc sg fem), I heard the third living creature saying, “Come!” And I looked, and behold, a black horse! And its rider had a pair of scales in his hand.
Then I watched as the Lamb opened one of the seven seals (sphragidōn | σφραγίδων | gen pl fem), and I heard one of the four living creatures say with a voice like thunder, “Come!”