Rashi, on Isa 1:13

“Offer sacrifice no more in vain: incense is an abomination to me. The new moons, and the sabbaths, and other festivals I will not abide, your assemblies are wicked.”

“You shall bring no more vain meal-offerings I warn you, you shall not bring Me your vain meal- offering, for the smoke that rises from it is smoke of abomination to Me, and not for My satisfaction. New moons and Sabbaths, calling, convocations, I cannot... and [sic, does not appear in Parshandatha] to call convocations, i.e., New Moons and Sabbaths when you gather to call a convocation and an assembly on them, I cannot bear the iniquity in your hearts that is inclined to paganism, and the convocation with it, for these two things are incompatible: to call a convocation to gather before Me, and the iniquity that is in your hearts for paganism, and you do not take it out of your hearts.”

Imported from an open dataset — not yet checked against the printed edition.