And certain other (heretics), contentious by nature, (and) wholly uninformed as regards knowledge, as well as in their manner more (than usually) quarrelsome, combine (in maintaining) that Easter should be kept on the fourteenth day of the first month, according to the commandment of the law, on whatever day (of the week) it should occur. (But in this) they only regard what has been written in the law, that he will be accursed who does not so keep (the commandment) as it is enjoined. They do not, however, attend to this (fact), that the legal enactment was made for Jews, who in times to come should kill the real Passover. And this (paschal sacrifice, in its efficacy,) has spread unto the Gentiles, and is discerned by faith, and not now observed in letter (merely). They attend to this one commandment, and do not look unto what has been spoken by the apostle: “For I testify to every man that is circumcised, that he is a debtor to keep the whole law.” In other respects, however, these consent to all the traditions delivered to the Church by the Apostles.
Reproduced in full. Translation: Ante-Nicene Fathers, vol. 5 (Roberts and Donaldson, 1886), public domain (Public domain).