The Early Christians
n“A whole body of ‘Against the Jews’ literature was produced by leading Fathers who defamed the Jews as a people and emptied their religious beliefs and practices of any historical value. Two major causalities of the anti-Jewish campaign were Sabbath and Passover. The Sabbath was changed to Sunday and Passover was transferred to Easter-Sunday.  Scholars usually recognize the anti-Judaic motivation for the repudiation of the Jewish reckoning of Passover and adoption of Easter-Sunday instead. Joachim Jeremias attributes such a development to ‘the inclination to break away from Judaism.’ In a similar vein, J.B. Lightfoot explains that Rome and Alexandria adopted Easter-Sunday to avoid ‘even the semblance of Judaism’”

- Samuele Bacchiocchi, God's Festival in Scripture and History, 1995, pp. 101-103