Revelation 8:13

And I looked and I heard a solitary eagle flying in mid-heaven, and crying with a loud voice, "Woe, woe, woe for all who live on the earth, Because of the rest of the trumpet-blasts That the three angels are about to blow!"

Revelation 11:14

"The second woe is passed; and there is a third woe soon to follow."

Revelation 9:12

"The first woe has passed; and still there are two woes to follow."

Revelation 14:6

Then I saw another angel who was flying in mid-heaven. He had an eternal evangel, to evangelize all the dwellers on the earth, of every nation and tribe and tongue and people.

Revelation 19:17

And I saw an angel standing in the sun, who shouted in a loud voice to all the birds that fly in mid-heaven, "Come, gather yourselves together to the great supper of God,

Hebrews 1:14

Are they not all ministering spirits, sent forth for service in behalf of those who are about to inherit salvation?

Revelation 9:1

Then the fifth angel blew his trumpet, and I saw a star fallen from heaven upon the earth; and to him was given the key to the bottomless pit.

Revelation 14:3

They were singing a new song before the throne, and before the four Living Creatures and the Elders; and none can learn that song, except the one hundred and forty and four thousand, who had been redeemed from the earth.

Treasury of Scripture Knowledge

Summary

And I beheld, and heard an angel flying through the midst of heaven, saying with a loud voice, Woe, woe, woe, to the inhabiters of the earth by reason of the other voices of the trumpet of the three angels, which are yet to sound!

General references

Bible References

Flying

Revelation 14:3
They were singing a new song before the throne, and before the four Living Creatures and the Elders; and none can learn that song, except the one hundred and forty and four thousand, who had been redeemed from the earth.
Revelation 19:17
And I saw an angel standing in the sun, who shouted in a loud voice to all the birds that fly in mid-heaven, "Come, gather yourselves together to the great supper of God,
Hebrews 1:14
Are they not all ministering spirits, sent forth for service in behalf of those who are about to inherit salvation?

General references

Revelation 11:14
"The second woe is passed; and there is a third woe soon to follow."