In the present chapter, an investigation was conducted into the relationship between the adherence to the Ten Commandments and socio-economic development. Inglehart’s hypothesis, which has been hitherto strongly supported by empirical research, suggests that as human development increases, values shift towards secular values that are less influenced by religious communities. In accordance with Nobel laureate Simon Kuznets’s theory, which proposed a non-linear relationship between inequality and socio-economic development, subsequent research has demonstrated that many development processes are also non-linear and contingent on the level of development. The findings of the research hitherto indicated a marked global divide in the observance of the Ten Commandments. The present study can establish a relationship between the rejection of sexual morality, as outlined in Chapter 5 , and the human development index. It is evident that the relation is not linear, and that the explained variance is more than 67%. The same happens with the factor “religious believers” and the factor “religious activism”. Also, there is a strong relationship between the parametric religious morality index and the UNDP human development index. We then present multiple regression analyses of these non-linear relationships and the analyses of their residuals. The data presented here is of particular concern for the Roman Catholic Church, as it indicates a precipitous decline in morality at higher levels of development, a decline that the Church had not really anticipated. In contemporary, highly developed societies, there is a concomitant rise in the acceptance of a range of controversial practices and lifestyles, including homosexuality, abortion, euthanasia and suicide, as well as casual sex. This phenomenon is particularly evident in societies where there is a higher level of development. In developed societies around the world, there is a notable decline in both religious faith and the perceived importance of religion in people’s personal lives. In less economically developed societies worldwide, there is a discernible relationship between the progression of development and the decline in membership of religious organisations. Concurrently, there is a decline in the acceptance of values associated with the seventh commandment of the Decalogue, which stipulates the protection of property rights. The repercussions of development on morality can be likened to the force of a tsunami. Our multiple regression analyses also examine effects of the size of the followers of different religious denominations in the countries of the world. The data demonstrate a strongly significant positive relationship between the proportion of the Muslim population per total population and the observance of the Ten Commandments. A similar relationship is evident between the proportion of the Orthodox Christian population per total population and the observance of the Ten Commandments. Conversely, the proportion of the population with no religious denomination appears to exert a strong negative statistical effect on the observance of the Ten Commandments globally. The regression model under consideration explains almost 80% of the variance. Considering the residuals from these relationships, the ten societies worldwide that have been ranked best are Singapore, Poland, Georgia, Lithuania, Myanmar, Kazakhstan, Zimbabwe, Albania, Peru and Romania. Meanwhile, the ten societies that have been ranked lowest are Vietnam, Morocco, Andorra, the Netherlands, Ukraine, Denmark, Spain, North Macedonia, Bulgaria and France. On a global level, the negative outlier Vietnam is particularly striking, but the disappointing residual values for Morocco, Spain, Ukraine, the Netherlands and Denmark are also socio-economically and politically remarkable if we take those residuals as a strong indicator of an existing or absent business ethics.