Revelation 14:3

14:3 and they were singing a new song before the throne and before the four living creatures and the elders. No one was able to learn the song except the one hundred and forty-four thousand who had been redeemed from the earth.

Revelation 14:6

Three Angels and Three Messages

14:6 Then I saw another angel flying directly overhead, and he had an eternal gospel to proclaim to those who live on the earth – to every nation, tribe, language, and people.

Revelation 19:17

19:17 Then I saw one angel standing in the sun, and he shouted in a loud voice to all the birds flying high in the sky:

“Come, gather around for the great banquet of God,

Psalms 103:20

103:20 Praise the Lord, you angels of his,

you powerful warriors who carry out his decrees

and obey his orders!

Hebrews 1:14

1:14 Are they not all ministering spirits, sent out to serve those who will inherit salvation?