28 But why speak of the Apostle, when the Lord Himself cries through the prophet: “Hearken unto Me, My people, you who know judgment, in whose heart is My law.” God says: “Hearken unto Me, My people, you that know judgment.” Auxentius says: You know not judgment. Do you see how he condemns God in you, who rejects the voice of the heavenly oracle: “Hearken unto Me, My people,” says the Lord. He says not, “Hearken, you Gentiles,” nor does He say, “Hearken, you Jews.” For they who had been the people of the Lord have now become the people of error, and they who were the people of error have begun to be the people of God; for they have believed on Christ. That people then judges in whose heart is the divine, not the human law, the law not written in ink, but in the spirit of the living God; not set down on paper, but stamped upon the heart. Who then, does you a wrong, he who refuses, or he who chooses to be heard by you?
Source: Sermon against Auxentius (New Advent)