Numbers 10:3

And when they shall blow them, all the congregation shall gather themselves unto thee at the door of the tent of meeting.

Jeremiah 4:5

Declare ye in Judah, and publish in Jerusalem; and say, Blow ye the trumpet in the land: cry aloud and say, Assemble yourselves, and let us go into the fortified cities.

Joel 2:15-16

Blow the trumpet in Zion, sanctify a fast, call a solemn assembly;

Treasury of Scripture Knowledge

Summary

And when they shall blow with them, all the assembly shall assemble themselves to thee at the door of the tabernacle of the congregation.

General references

Bible References

General references

Jeremiah 4:5
Declare ye in Judah, and publish in Jerusalem; and say, Blow ye the trumpet in the land: cry aloud and say, Assemble yourselves, and let us go into the fortified cities.
Joel 2:15
Blow the trumpet in Zion, sanctify a fast, call a solemn assembly;

American Standard Version Public Domain