"Then the seventh angel blew his trumpet, and there were loud voices in heaven, saying, 'The kingdom of the world has become the kingdom of our Lord and of his Christ, and he shall reign forever and ever'" (Revelation 11:15, English Standard Version).
The Day of Trumpets heralds the intervention of God in the affairs of humanity on a global basis—a dramatic turning point in world history and the return of Christ to this world.