The scene you alluded to here has nothing to do with investment. It was Jesus' way of showing the need for taxation in the system. Even as that is, most christians would rather tithe than pay tax to constituent authority. That's wrong, anyway. Answering your question, I don't think religion should be used as coin campaign. That will be mixing religion with business or economics. I've had cases where I stayed out of investments simply because owners tilted it with religion. My reason being that they will mess it up with emotion. Most people in religion are bias and will take decisions based on emotions instead of on fact.