Revelation 7:2; Revelation 16:12; Revelation 21:13

Revelation 7:2

2 And 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 given to hurt the earth and the sea,

Revelation 16:12

12 And the sixth angel poured out his vial upon the great river Euphrates; and the water thereof was dried up, that the way of the kings of the east might be prepared.

Revelation 21:13

13 On the east three gates; on the north three gates; on the south three gates; and on the west three gates.