The Name of Mercy in the Sacrifices
Some claimed that the laws of the korbanos came from a lesser power, one that is only just and not kind. Ben Azzai pointed out that the sections on korbanos do not use the other names of Hashem. They use the Four-Letter Name, which expresses His goodness. He taught this so that the disbelievers would find no support for their views in the Torah.
Source: Sayings of Ben Azzai