Jesus commanding his Disciples to buy swords nullifies the implied ideology that God is a pacifist.
It's much more than that. Examine the entirety of the Bible, which has been said to be the most violent book ever written.
God is so pissed, he wipes out humanity except for 8 people. Then, he's so outraged as his "chosen people" he wants to annihilate them; it takes Moses to talk him out of it.
Then there is the 2nd Coming. The first thing Jesus will do is annihilate his enemies with a "sword" coming out of his mouth. Then, he will rule with an iron rod - THE EXACT OPPOSITE of living out a pacifist ideology. Finally, there is Judgement Day. Jesus becomes the greatest killer in history, so hell bend to destroy evil that he will literally resurrect the dead just to annihilate them in the Lake of Fire, known as the 2nd and Eternal Death. V
iolence is God's plan to ultimately solve the problem of evil. WWJD, except in that way, eh?
And he told us to buy a sword in the meantime.