I don't fully understand the modern church's amnesia-plus-aversion regarding one of the most central qualities of God understood for centuries before us:
The LORD is a warrior; the LORD is his name. (Ex. 15:3 NIV)
The LORD will march out like a mighty man, like a warrior he will stir up his zeal; with a shout he will raise the battle cry and will triumph over his enemies. (Isa. 42:13 NIV)
But the LORD is with me like a mighty warrior; so my persecutors will stumble and not prevail. (Jer. 20:11 NIV) [The NASB translates mighty warrior "dread champion." Goliath was a dread champion; the mighty men of David were dread champions. King James has it as "a mighty terrible one."]
Lift up your heads, O you gates; be lifted up, you ancient doors, that the King of glory may come in. Who is this King of glory? The LORD strong and mighty, the LORD mighty in battle. (Ps. 24:7-8 NIV)
Our God is a warrior, mighty and terrible in battle, and he leads armies. It is this God that man is made in the image of. I spoke of this in Wild at Heart, but some things bear repeating, because a man will be in a much better place to enter the stage of the Warrior if he knows this is thoroughly grounded in Scripture, supported by Scripture, compelled by Scripture.