Nehemiah 4:18

And everyone that builded, had his sword gird by his side, and so builded they. And the trumpeters stood beside me.

Numbers 10:9

"And when ye shall go to war in your land against your enemies that vex you, ye shall trump with the trumpets and ye shall be remembered before the LORD your God and saved from your enemies.

2 Chronicles 13:12-17

Moreover, see: God is with us in the forward; and his priests, and the roaring trumpets to cry alarm against you. Ye children of Israel, fight not with the LORD God of your fathers: for it will not prosper with 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 when ye shall go to war in your land against your enemies that vex you, ye shall trump with the trumpets and ye shall be remembered before the LORD your God and saved from your enemies.
2 Chronicles 13:12
Moreover, see: God is with us in the forward; and his priests, and the roaring trumpets to cry alarm against you. Ye children of Israel, fight not with the LORD God of your fathers: for it will not prosper with you."

General references

1 Corinthians 12:21
And the eye cannot say unto the hand, "I have no need of thee," nor the head also to the feet, "I have no need of you."
1 Corinthians 14:8
And also if the trumpet give an uncertain voice, who shall prepare himself to fight?