The Cost of being a successful Christian are often misunderstood. In economics all costs are considered to be opportunity costs. An opportunity cost is best defined as the next best thing. For example the next best thing you might do rather than read this blog, is the true cost of reading this blog. Thus the opportunity cost of Christianity is not Islam or Hinduism, because that is not the next best thing the majority of Christians might choose. The opportunity cost of Christianity is more likely to be: the judging of others, or bass fishing, or sexual promiscuity, gossip, greed , or any number of things potentially given up to become a successful Godly person.