Ninjas are experts in various weapons. Being highly trained fighters and assassins, ninjas become skilled in numerous types of deadly instruments. Of course you have the standard sword, but you also see them using throwing stars, fighting chains, blowguns, staves, and many others. Even without these armaments, ninjas are also skilled hand-to-hand fighters, and so are really never without a weapon. No matter when or where, they are ready to do battle.
The Bible uses many weapon analogies, such as spears, bows, and swords. The Bible itself is commonly presented as being a sword, and one that we should wield. God gives us many weapons in our fight against Satan. Some are straightforward, and some are unusual. We know of the sword as a weapon, but who would have thought of making a weapon out of two sticks attached to a short chain? We call it a nunchaku. Our heavenly weapons are really the equivalent of an arsenal, varying in all kinds of sizes, shapes, and types. We shouldn't be afraid to use these weapons, and should be trained in their use. When we need to attack Satan, or even defend against him, the sword of the Word should immediately be in our hand. Have no misunderstanding...there is a war going on, both in the spiritual and physical sense. Those of us on the side of Heaven cannot ignore our adversary. And like a ninja, we need to have many armaments with which to fight. Thankfully, God provides them.
The LORD has opened his arsenal and brought out the weapons of his wrath, for the Sovereign, LORD Almighty has work to do in the land of the Babylonians.