Tosefta zu Jechezkiel 5:78

Rabbi Shimon would say: Impurity of the Temple and its sacrificial foods is more serious than all the aveirot that are in the Torah, because all the aveirot that are in the Torah are atoned for by one goat but impurity of the Temple and its sacrificial foods is atoned for by 32 goats. All the aveirot that are in the Torah are atoned for once a year but impurity of the Temple and its sacrificial foods is atoned for every single month, as it says, “Assuredly, as I live—said the Lord God—because you defiled my sanctuary [with all of your detestable things and all of your abominations, I in turn will shear you away and show no pity” (Ezek 5:11). Serious were your detestable things and the abominations you did, but the impurity of the Temple and its sacrificial food is more serious than all of them.