Revelation 7:1-3

1After this I saw four angels standing at the four corners of the earth, holding back its four winds so that no wind would blow on land or sea or on any tree. 2And I saw another angel ascending from the east, with the seal of the living God. And he called out in a loud voice to the four angels who had been given power to harm the land and the sea: 3“Do not harm the land or sea or trees until we have placed a seal on the foreheads of the servants of our God.”