“Concerning the prohibition of usury and base gain by the clergy; and concerning the prohibition against conversing or eating with the Jєωs. No priest shall set money out at interest or take unfair profit or be friendly or sociable with Jєωs; nor should anyone take food or drink with the Jєωs; for if this was decreed by the holy apostles, it is incuмbent upon the faithful to obey their command; and the synod shall excommunicate any one who does not comply with this order.”--Pope Saint Sylvester I at the First Ecuмenical Council of Nicea
“We decree and order that from now on, and for all time, Christians shall not eat or drink with the Jєωs, nor admit them to feasts, nor cohabit with them, nor bathe with them. […] They cannot live among Christians, but in a certain street, separated and segregated from Christians, and outside which they cannot under any pretext have houses."--Pope Eugene IV