General | Who are those Angels

Revelation 7: 1-3 After these things I saw four angels standing at the four corners of the earth, holding the four winds of the earth, that the wind should not blow on the earth, on the sea, or on any tree. ² Then I saw another angel ascending from the east, having the seal of the living God. And he cried with a loud voice to the four angels to whom it was granted to harm the earth and the sea, ³ saying, “Do not harm the earth, the sea, or the trees till we have sealed the servants of our God on their foreheads.”