Hebrews 13:10
For “we have an altar whereof they have no right to eat which serve the Tabernacle.” Not as the Jewish [ordinances], are those among us, as it is not lawful even for the High Priest to partake of them. So that since he had said, “Do not observe,” and this seemed to be [the language] of one who is throwing down his own building, he again turns it round. What, have not we then observances as well (he says)? [Yea we have], and we observe them very earnestly too, not sharing them even with the priests themselves.
Source: Homilies on the Epistle to the Hebrews (New Advent)