In Genealogy of Morals, He goes further:
Rather than adopting the values of the Romans, the Hebrews took their station in life and examined it from a new perspective. Instead of seeing themselves as failures when competing for Power and Wealth against the Romans, they inverted their ideological alignment and re-branded their ressentiment into a form of self-righteousness. This self-righteousness, this new moral footing they had found, provided ample opportunity to re-value not only their ressentiment but their entire value system, ultimately forming a morality not so much concerned with attaining a good life as it was with lambasting those who did. Thus, asceticism was borne anew, re-branding the lack of ability to have a good life as an active choice, and a morally ‘good’ choice at that. In abstaining from the pleasures of this world, many imagined that they would be morally permitted to enjoy pleasures even hence unknown in ‘the next life’, as recompense for their suffering in this one. One can easily see how this moral perspective was attractive to the underclass of its time. In a world where you cannot obtain the good life, pretending that the poor circumstances you find yourself in is a virtue is a good way to rationalize and sustain your existence in this life.
It is on the basis of this analysis that Christian morality is inherently a form of slave morality’s ressentiment towards the masters, and provides an impotent form of revenge in providing the moral foundation for those of the underclass to pass judgement on those of the upper. The embrace of the downtrodden, poor, oppressed, passive, and meek as those of true moral character, coupled with a denial of wealth, power, strength, self-assertion, and dominance as a moral failing is pervasive throughout the Christian New Testament. The very center of the religion’s iconography, Jesus Christ, a physical manifestation of God upon this Earth as his ‘son’, helps to show this. He is a man borne from low status, had every ‘virtue’ of slave morality thrust upon him by his destiny, and overcame the ruling Romans to return to Heaven, that next life his followers and followers of slave morality dream of. In the Christian mythos, during his life, he rebuked the powerful and wealthy, he embraced the poor, sickly, and oppressed, and he did all of this while maintaining a lifestyle of a Roman underclassman. It is my belief that Christianity’s major value proposition from a perspective of utility is that it provides an underclass with a moral foundation that spiritually and psychologically sustains a ‘slave’ class, be it racial, sexual, economic, etc, under such a burden. It acts as a lever does, reducing the weight associated with life as an underclassman of various sorts.