Revelation 4:1; Revelation 1:10; Hebrews 12:18-19; 1 Corinthians 15:52; Matthew 24:31; Isaiah 58:1

Revelation 4:1

1 After these things I looked, and behold, a door standing open in heaven, and the first voice which I had heard, like the sound of a trumpet speaking with me, said, "Come up here, and I will show you what must take place after these things."

Revelation 1:10

10 I was in the Spirit on the Lord's day, and I heard behind me a loud voice like the sound of a trumpet,

Hebrews 12:18-19

18 For you have not come to a mountain that can be touched and to a blazing fire, and to darkness and gloom and whirlwind,

19 and to the blast of a trumpet and the sound of words which sound was such that those who heard begged that no further word be spoken to them.

1 Corinthians 15:52

52 in a moment, in the twinkling of an eye, at the last trumpet; for the trumpet will sound, and the dead will be raised imperishable, and we will be changed.

Matthew 24:31

31 "And He will send forth His angels with A GREAT TRUMPET and THEY WILL GATHER TOGETHER His elect from the four winds, from one end of the sky to the other.

Isaiah 58:1

1 "Cry loudly, do not hold back; Raise your voice like a trumpet, And declare to My people their transgression And to the house of Jacob their sins.