God is My Fearsome Protection

The LORD is a warrior; Yahweh is his name!

The Lord your God is going ahead of you. He will fight for you, just as you saw him do in Egypt.

Do not be afraid or discouraged, for the Lord will personally go ahead of you. He will be with you; he will neither fail you nor abandon you.

He trains my hands for battle; he strengthens my arm to draw a bronze bow.

The Lord is my light and my salvation— so why should I be afraid?
The Lord is my fortress, protecting me from danger, so why should I tremble?
-Exodus 15:3, Deut. 1:30, 31:8; Psalm 18:34, Psalm 27:1 (NLT)

God is a warrior.  God makes war on our behalf.  God makes us into warriors.  God is our weapon and our protector.  God is the edge of the sword.  God is awesome.  God invokes fear and terror.  Awe and awesome are words that should be reserved for God alone.

For further study, these seem to be two good (scholarly) books on this topic.  I have friends that have read these:

God Is a Warrior 
by Tremper Longman III & Daniel G. Reid

God at War
by Gregory A. Boyd

Listen to these talks (I have):

The Way of the Warrior
by Graham Cooke

And if you prefer reading Graham Cooke:
Qualities of a Spiritual Warrior 
Coming into Alignment
by Graham Cooke (The Way of the Warrior series)