Problem is that Christian church went through the age of enlightenment, through the Reformation and became a centralized institution with one head and a more or less generalized interpretation of the Bible. There are so many different christian subreligions, but mostly they all recognize the NT as an update to the OT (and that an 'eye for an eye' has been replaced by 'turn him the other cheek').
It's curious how many millions of people Christians have managed to kill since becoming enlightened.
Well, the last crusade was in the 13th century, so...
And if the Pope indeed officially declared Holy War on other countries and religions, I haven't noticed as of yet.
That's why "we" allow ourselves and everyone else to draw cartoons of God and Jesus, make fun of the Bible, the Pope, etc... without threatening to kill anyone. Yes, there are lunatics, but it's not the official agenda. That's why "we" do not sentence women to death that have cheated on their husband.