Oath of allegiance to Herod refused by the Shammaites, [108].

Oath of purgation (Shebuoth hesset), [556].

Octavianus. See [Augustus].

Odenathus and the Jews, [527] ff.

Onkelos Targum, [387], [581].

Ophites (Naasites), Gnostic sect, [375].

Ordinances of Meïr, [439].
of Usha, [405].

Ordination, [361].
prohibited by Hadrian, [426].

Origen, [501].
and Hillel II, [487].
work in the interpretation of the Bible (Hexapla), [488] f.

Osius (Hosius), bishop of Cordova, fanaticism against the Jews, [620].