Revelation 8:13
And as I looked, I heard an eagle flying in midair, saying in a loud voice, "It is bad, very bad, awful bad for those people who live on earth, because of the sound of the trumpets of the remaining three angels!" [i.e., because of the messages they will deliver].
Revelation 11:14
The second Calamity is over; look, the third one is coming soon.
Revelation 9:12
The first Calamity is over; look, two more calamities are yet to come.
Revelation 14:6
Then I saw another angel flying in mid heaven. He had eternal good news to proclaim to those who lived on the earth, and to every nation, tribe, language group and race.
Revelation 19:17
Then I saw an angel standing in the sun, and he called out in a loud voice to all the birds that fly in midair, "Come and be assembled together for the great supper of God,
Hebrews 1:14
Are not all angels ministering spirits sent out [by God] to serve those people who will inherit salvation?
Revelation 9:1
[When] the fifth angel sounded its trumpet, I saw a star that had fallen from the sky to the earth. And the key to the shaft leading to the deep pit [Note: This is thought to be the place where the devil and his demons live] was given to him.
Revelation 14:3
And they [i.e., the 144,000] were singing a new song in front of God's throne, and in front of the four living beings and the [twenty-four] elders. No one could learn [to sing] this song except the one hundred and forty-four thousand [See 7:4,9] who had been purchased from the earth.