It's good to see that at least a few others out there actually understand deeper Christian theology. It's not that simple, and it takes some intellectual work to really get into it. But once you do, it's pretty rewarding stuff.
I thought you might appreciate this:
Fundamental observation of human nature is that humans twist things to suit their own self interest. Little children love making a game of this once they figure out. Tell them they have to eat their dinner before they can have dessert. They will take one tiny bite of dinner, smile, and say that they have literally complied with your request so it's time for dessert. It's a fundamental human trait. Pretty much every version of the genie with three wishes story is a variant on how things can get completely twisted while still complying with exact literal meaning.
One of the main points of the New Testament and the Jesus stories is to show how the legalistic Old Testament can be twisted good or evil, depending on the heart of the human applying it. And ultimately humans tend to twist hypocritical and evil because of their very self interested nature.
The Old Testament law of stoning for adultery is actually very just as long as it's a true covenant, freely agreed upon by everyone, and applied equally to everyone. That is how it's written down. But humans will never be able to get past their own selfishness to apply something justly like that. They will always be hypocrites. Everyone wants stoning when it's their wife that cheats. When they cheat themselves, well, now everyone wants mercy. It is totally hypocritical, and it always will be.
The story of the Pharisees bringing the adulteress to Jesus illustrates this. They are twisting the literal law in an evil way to try to trap Jesus. Reality is they are total hypocrites who don't give a damn about applying the law fairly. The law says that both the woman and the man get stoned. Where is the man? They said they caught her in the act of having sex with him. Either they were lying about that, or they let the guy get away. The Pharisees are being totally hypocritical about it, just like every strict legalist.
When Jesus points this out, the Pharisees leave. They know in their hearts they are being hypocrites. When they realize they can't hide behind the law to do it, they leave. Then Jesus can let the woman go without stoning because there is no one left who would stone her without being a hypocrite.
Jesus is demonstrating the total fairness of the Old Testament while simultaneously indicting all of humanity for being utterly unable to ever follow it in practice. That is why he presents the Golden Rule as an alternative. Every human already knows right from wrong naturally. Just follow that and do the Golden Rule. Any kind of strict legalist rules will always be hypocritical and corrupt because that is human nature.
You see this with strict legalist Christians. They are always hypocrites themselves. Fundamentalist preachers ranting against gays. Then they turn out to be cheating on their wives, sometimes with other men. It's just human nature.
That is the problem with this radical Islam. It's a strict, legalistic religious view that is totally corrupt. They are shooting up innocent people in France and crucifying children over in Iraq. It does not get much more twisted than that. But that is what always happens when humans try to make strict legalistic religions.
Christianity, as understood by the actual teachings and words of Jesus, is totally compatible with the secular Western world. In fact, the Golden Rule is what pretty much everyone in the Western world who doesn't believe in God wants done anyway. So the interests align exactly whether one believes or not.
Corrupt legalistic religious hierarchy is not compatible. The old Catholic Church was that way. It's mostly gone now. The new pope seems to be trying to rebuild the religion following the actual teachings of Jesus rather than following 2000 years of human corruption.
Radical Islam is the biggest threat out there right now. And even though most of the Muslims aren't radical, there are still a whole lot of radical Muslims out there. Way more than any other religion or ideology right now. It is a true threat to Western society, and it is completely incompatible.