This Messianic expectation had been a fermenting leaven since the great days of Judas Maccabaeus.
A-, without; 0,un, leaven), a name given by the Orthodox Eastern to the Western or Latin Church, because of the latter's use of unleavened bread in the Eucharist, a practice which arose in the 9th century and is also observed by Armenians and Maronites following the Jewish passover custom.
PASSOVER, a Hebrew spring festival, celebrated by the Jews in commemoration of the exodus from Egypt by a family feast in the home on the first evening, and by abstaining from leaven during the seven days of the feast.
No leaven shall be eaten with it for seven days, and bread of affliction shall be eaten because they came forth from Egypt in haste.
On the other hand, the absence of leaven may recall primitive practice before its introduction as a domestic luxury; sacral rites generally keep alive primitive custom.