Nehemiah 4:18

And the builders had every one his sword girded by his side, and built. And he that sounded the trumpet was by me.

Numbers 10:9

And if ye go to war in your land against the enemy that oppresseth you, then ye shall blow an alarm with the trumpets; and ye shall be remembered before Jehovah your God, and ye shall be saved from your enemies.

2 Chronicles 13:12-17

And behold, we have God with us at our head, and his priests, and the loud-sounding trumpets to sound an alarm against you. Children of Israel, do not fight with Jehovah the God of your fathers; for ye shall not prosper.

Treasury of Scripture Knowledge

Summary

For the builders, every one had his sword girded by his side, and so builded. And he that sounded the trumpet was by me.

Bible References

He that sounded

Numbers 10:9
And if ye go to war in your land against the enemy that oppresseth you, then ye shall blow an alarm with the trumpets; and ye shall be remembered before Jehovah your God, and ye shall be saved from your enemies.
2 Chronicles 13:12
And behold, we have God with us at our head, and his priests, and the loud-sounding trumpets to sound an alarm against you. Children of Israel, do not fight with Jehovah the God of your fathers; for ye shall not prosper.

General references

1 Corinthians 12:21
The eye cannot say to the hand, I have not need of thee; or again, the head to the feet, I have not need of you.
1 Corinthians 14:8
For also, if the trumpet give an uncertain sound, who shall prepare himself for war?