Sometimes I look at an environment like the finance industry, and wonder whether any Christians exist there, and how long they last. I had a few graduating friends who wanted to get into finance, which was news to me, as it didn't seem like the kind of occupation a Christian would be inclined to follow.
Well, turns out there are a surprisingly large number of Christians in banking. And as for how being a Christian squares with all that money-making industry, given the 'love of money is the root of all kinds of evil' and 'it is harder for a camel to pass through the eye of a needle than for a rich man to enter the kingdom of God' bits in the Bible, it is helpfully pointed out that it is the love of money, and that money is a gift from God. The question is not whether you earn money or not, but what your attitude towards that money is, and what you do with it.