4 Bible Verses about Trumpets For Signalling

I was in [i.e., under the influence of] the Holy Spirit on the Lord's day [i.e., Sunday], when I heard behind me a loud voice, like a trumpet,

After [seeing all] these things, I looked, and there in heaven I saw [a vision of] an open door, and the voice I had first heard speaking to me like [the sound of] a trumpet [See 1:10], said, "Come up here [i.e., to heaven], and I will show you the things which must happen after these things [i.e., the things just revealed]."

"Therefore, when you give money to help poor people, do not blow a trumpet in front of you [i.e., to call attention to it] as the hypocrites do in the synagogues and streets. They do this in order to win praise from people. It is true when I say to you, they have [already] received their reward.

to the blast of a trumpet and the sound of words [from God] that the hearers begged not to have to listen to [anymore]. [See Ex. 20:19].