12 For (B)the word of God is living and (C)active, (D)sharper than any (E)two-edged sword, piercing to the division of soul and of spirit, of joints and of marrow, and (F)discerning the thoughts and intentions of the heart. - Hebrews 4:12
(A)Beat your plowshares into swords, and (B)your pruning hooks into spears; let the weak say, “I am a warrior.” -Joel 3:10I thought I'd splash out some verses at the beginning this time. The sword of the Spirit does both of those, it cuts like nothing else and causes the weak to say "I am a warrior."
Now if we take a look at the first passage, what we can see from it is that the word of God can cut anything and pierce anything even the smallest joints and your thoughts as well. I think it's a statement saying the word of God can pierce through anything but knowing God it is also saying no matter how small you think your sin is, no matter how little you turn away from Him there will always be a rebuking from the bible, there will always be something correcting you, because if you aren't perfect then you aren't worthy of being with God. Yet that is the amazing thing about Jesus, He gives us His righteousness, His perfectness which means that the word of God doesn't deem us unworthy but rather causes us to maintain our righteousness and see where we are failing. It also means that if we constantly read the Bible we can keep Satan away and stop Him entering our minds.
The second passage I wanted to share because of the last line and I think that really sums up the whole armour of God, I think this really encompasses what the armour does, by wearing this we can stand in the army of God and cause the evil on to run.