Numbers 10:7

And when the congregation is to be gathered together, ye shall blow, but ye shall not blow an alarm:

Joel 2:1

Blow the trumpet in Zion, and sound an alarm in my holy mountain; let all the inhabitants of the land tremble: for the day of Jehovah cometh, for it is at hand;

Numbers 10:3-4

And when they shall blow with them, the whole assembly shall gather to thee at the entrance of the tent of meeting.

Treasury of Scripture Knowledge

Summary

But when the congregation is to be gathered together, ye shall blow, but ye shall not sound an alarm.

Ye shall blow

Sound

Bible References

Ye shall blow

Numbers 10:3
And when they shall blow with them, the whole assembly shall gather to thee at the entrance of the tent of meeting.

Sound

Joel 2:1
Blow the trumpet in Zion, and sound an alarm in my holy mountain; let all the inhabitants of the land tremble: for the day of Jehovah cometh, for it is at hand;