any materialist philosophy is that humans are not matter. There is something in them that extends beyond the material realm. What makes humans human is a sense of the sacred.
Marxism is remarkably obtuse to what is in plain view throughout history: the overwhelming influence of religious ideas on human conduct. It won’t do to dismiss religion as “ideology” because that implies that Marxism has privileged access to a truth beyond or above ideology, which would itself be a religious claim. Like all modern isms, Marxism is a self-contradicting irreligious religion.