Revelation 7:1

The Sealing of the 144,000

7:1 After this I saw four angels standing at the four corners of the earth, holding back the four winds of the earth so no wind could blow on the earth, on the sea, or on any tree.

Revelation 15:1

The Final Plagues

15:1 Then I saw another great and astounding sign in heaven: seven angels who have seven final plagues (they are final because in them God’s anger is completed).

Revelation 21:12

21:12 It has a massive, high wall with twelve gates, with twelve angels at the gates, and the names of the twelve tribes of the nation of Israel are written on the gates.