Nehemiah 4:18

Every builder was working with his sword at his side. And by my side was a man for sounding the horn.

Numbers 10:9

And if you go to war in your land against any who do you wrong, then let the loud note of the horn be sounded; and the Lord your God will keep you in mind and give you salvation from those who are against you.

2 Chronicles 13:12-17

And now God is with us at our head, and his priests with their loud horns sounding against you. O children of Israel, do not make war on the Lord, the God of your fathers, for it will not go well for you.

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 you go to war in your land against any who do you wrong, then let the loud note of the horn be sounded; and the Lord your God will keep you in mind and give you salvation from those who are against you.
2 Chronicles 13:12
And now God is with us at our head, and his priests with their loud horns sounding against you. O children of Israel, do not make war on the Lord, the God of your fathers, for it will not go well for you.

General references

1 Corinthians 12:21
And the eye may not say to the hand, I have no need of you: or again the head to the feet, I have no need of you.
1 Corinthians 14:8
For if the war-horn gives out an uncertain note, who will get ready for the fight?

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain