Seeking advice: my wife and I are of different religions.

[Karadeniz]

12. God is beyond religions. Christian scripture uses lots of human/earthly examples to get its points

Across because that's what most people could relate to. However, there are two instances in which a writer was more metaphysical. In one example, we are told to be like God and shine our light on everyone. God is light, energy, not the usual father figure. Our light is the soul. So, if being a Christian means following Jesus's teachings, which is what Jesus said, then you are a Christian from the soul.
The soul loves others, not self, your neighbor, your enemy.

Jesus also said to not hide your light under a basket. So, soul in human body.

I don't know what you're going to do if wifey is hung up on beliefs, a Jesus biography, because that's all from the brain, not soul. The parables, even most of the biography, is about soul and soul development.