On the Genealogy of Morals by Friedrich Nietzsche portrays morality not as a series of abstract and transcendent principles, but rather a series of ideological positions that evolved in response to particular historical circumstances and contexts and often functions as ideologies that reinscribed power struggles into a linguistic realm but were used to formulate tools of repression and constraint of the Dionysiac and creative impulses. He sees moral discourse as an oppressive tool of the elites which functions as a sort of soft power, causing people to repress themselves. Thus mechanisms like guild and conscience act as a sort of internalized police force complicit with elite rule.
Christian is a system of belief that causes the believer to become submussive, obedient, and rule bound and worked, according to Nietzsche as a sort of control mechanism in the Roman Empire. It subornitates the strong in particular because it channels their strength towards ascetism rather than rebellion.