objective morality is dangerous in the sense that it causes people to not take responsibility for their actions by mechanism of transferring that responsibility to their preacher--who if so happened to have disagreed with another leader on a given theological issue, would not have come together to solve and finally agree but instead would have come apart leading two new sects of what was previously the same belief.
ironically the acceptance of moral relativism is the cure for the fractionation of religions which threatens to destroy institutions from internal rife, let alone the onslaught from without--that of rational thinking, evidence-based reasoning and the changing social environments advocating inclusion rather than exclusion.