Judges 6-7: The Lord is Peace

It might seem strange that Gideon was threshing grain in a wine press, but that was what the Israelites daily reality had become.  Their enemies, the Midianites, were trashing the place and making their lives miserable.  So miserable, that the Israelites were hiding in caves and mountain clefs.  So Gideon was threshing wheat in a place where the Midianites could not see him.
 
But God could see him, and in Gideon he saw someone he could use, someone who would listen and more than just listen, someone who would obey.  So God sends an angel.  When Gideon looks up from the wine press and sees him sitting under an oak tree the following conversation takes place.
'When the angel of the LORD appeared to Gideon, he said, "The LORD is with you, mighty warrior."
"But sir," Gideon replied, "if the LORD is with us, why has all this happened to us? Where are all his wonders that our fathers told us about when they said, 'Did not the LORD bring us up out of Egypt?'  But now the LORD has abandoned us and put us into the hand of Midian."
The LORD turned to him and said, "Go in the strength you have and save Israel out of Midian's hand. Am I not sending you?"
"But Lord,  "Gideon asked, "how can I save Israel? My clan is the weakest in Manasseh, and I am the least in my family."
The LORD answered, "I will be with you, and you will strike down all the Midianites together." ' - Judges 6: 12-15 NIV

So Gideon makes an offering of a young goat and unleavened bread that is miraculously consumed by fire and Gideon realizes who he has been talking to:
'"Ah, Sovereign LORD! I have seen the angel of the LORD face to face!"
But the LORD said to him, "Peace! Do not be afraid. You are not going to die."
So Gideon built an altar to the LORD there and called it The LORD is Peace."' - Judges 6:22-24 NIV

The Lord is Peace.  That is all Gideon needed to know as he tears down the altars to Baal and issues a trumpet call for troops to muster.  The Lord is Peace.  That is all he needs to know when God has him whittle the twenty-three thousand troops down to three hundred men.  The Lord is Peace.  That's all he needs to know when he sneaks into the enemy camp and sees  'The Midianites, the Amalekites and all the other eastern peoples had settled in the valley, thick as locusts. Their camels could no more be counted than the sand on the seashore.' - Judges 7:12 NIV

The Lord is Peace.  That's all he needs to know as he blows his trumpet for the 300 men to attack and watches as God delivers the enemy into his hands.  God did not abide Israel's enemies constantly harassing and attacking His people.  The Lord is Peace.