In the book of Revelation, an angel carried the Gospel,  telling of Jesus, to the world.

Revelation 14:

6 And I saw another angel flying through the sky, carrying the eternal Good News to proclaim to the people who belong to this world—to every nation, tribe, language, and people. 7 “Fear God,” he shouted. “Give glory to him. For the time has come when he will sit as judge. Worship him who made the heavens, the earth, the sea, and all the springs of water.”