Judges 7:8

So the 300 men took the people’s provisions and their trumpets into their hands. And Gideon sent all the other men of Israel, each to his tent, but retained the 300 men; and the camp of Midian was below him in the valley.

Leviticus 23:24

“Speak to the sons of Israel, saying, ‘In the seventh month on the first of the month you shall have a rest, a reminder by blowing of trumpets, a holy convocation.

Leviticus 25:9

You shall then sound a ram’s horn abroad on the tenth day of the seventh month; on the day of atonement you shall sound a horn all through your land.

Numbers 10:9

When you go to war in your land against the adversary who attacks you, then you shall sound an alarm with the trumpets, that you may be remembered before the Lord your God, and be saved from your enemies.

Joshua 6:4

Also seven priests shall carry seven trumpets of rams’ horns before the ark; then on the seventh day you shall march around the city seven times, and the priests shall blow the trumpets.

Joshua 6:20

So the people shouted, and priests blew the trumpets; and when the people heard the sound of the trumpet, the people shouted with a great shout and the wall fell down flat, so that the people went up into the city, every man straight ahead, and they took the city.

Judges 3:27

It came about when he had arrived, that he blew the trumpet in the hill country of Ephraim; and the sons of Israel went down with him from the hill country, and he was in front of them.

Judges 6:33

Then all the Midianites and the Amalekites and the sons of the east assembled themselves; and they crossed over and camped in the valley of Jezreel.

Isaiah 27:13

It will come about also in that day that a great trumpet will be blown, and those who were perishing in the land of Assyria and who were scattered in the land of Egypt will come and worship the Lord in the holy mountain at Jerusalem.

1 Corinthians 15:52

in a moment, in the twinkling of an eye, at the last trumpet; for the trumpet will sound, and the dead will be raised imperishable, and we will be changed.

Treasury of Scripture Knowledge

Summary

So the people took victuals in their hand, and their trumpets: and he sent all the rest of Israel every man unto his tent, and retained those three hundred men: and the host of Midian was beneath him in the valley.

In the valley

Bible References

Trumpets

Judges 3:27
It came about when he had arrived, that he blew the trumpet in the hill country of Ephraim; and the sons of Israel went down with him from the hill country, and he was in front of them.
Leviticus 23:24
“Speak to the sons of Israel, saying, ‘In the seventh month on the first of the month you shall have a rest, a reminder by blowing of trumpets, a holy convocation.
Leviticus 25:9
You shall then sound a ram’s horn abroad on the tenth day of the seventh month; on the day of atonement you shall sound a horn all through your land.
Numbers 10:9
When you go to war in your land against the adversary who attacks you, then you shall sound an alarm with the trumpets, that you may be remembered before the Lord your God, and be saved from your enemies.
Joshua 6:4
Also seven priests shall carry seven trumpets of rams’ horns before the ark; then on the seventh day you shall march around the city seven times, and the priests shall blow the trumpets.
Isaiah 27:13
It will come about also in that day that a great trumpet will be blown, and those who were perishing in the land of Assyria and who were scattered in the land of Egypt will come and worship the Lord in the holy mountain at Jerusalem.
1 Corinthians 15:52
in a moment, in the twinkling of an eye, at the last trumpet; for the trumpet will sound, and the dead will be raised imperishable, and we will be changed.

In the valley

Judges 6:33
Then all the Midianites and the Amalekites and the sons of the east assembled themselves; and they crossed over and camped in the valley of Jezreel.