The Feast of Trumpets is a Rehearsal to Hear Messiah's Voice?

Is it possible that the God's command to blow the Trumpet (shofar) on the Feast of Trumpets (The Jewish New Year), is actually not just about blowing Trumpets? What if it is a rehearsal that is supposed to prepare us to hear Messiah's voice?

A voice like a trumpet In Revelation 4:1, the apostle John writes, “After this I looked, and there in heaven was an open door. The first voice that I had heard speaking to me like a trumpet said, ‘Come up here, and I will show you what must take place after this.'”

So, whose Voice is like a Trumpet?

John hears this voice and recognizes it instantly. It is “[t]he first voice that I had heard speaking to me like a trumpet” (v. 1). This is, of course, the voice of Jesus, who spoke to John many times during His earthly ministry. But now, with the sonic fullness of heaven’s atmosphere, John hears the Messiah’s magnified tones and remembers the sound from Rev. 1:10 as Jesus instructs him to write what he sees to the seven churches in Asia Minor. Some time …