Joel 2:15

2:15 Blow the trumpet in Zion.

Announce a holy fast;

proclaim a sacred assembly!

Numbers 10:3

10:3 When they blow them both, all the community must come to you to the entrance of the tent of meeting.

Numbers 10:8

10:8 The sons of Aaron, the priests, must blow the trumpets; and they will be to you for an eternal ordinance throughout your generations.

Jeremiah 4:5

Warning of Coming Judgment

4:5 The Lord said,

“Announce this in Judah and proclaim it in Jerusalem:

‘Sound the trumpet throughout the land!’

Shout out loudly,

‘Gather together! Let us flee into the fortified cities!’

Hosea 8:1

God Will Raise Up the Assyrians to Attack Israel

8:1 Sound the alarm!

An eagle looms over the temple of the Lord!

For they have broken their covenant with me,

and have rebelled against my law.