Before he set off on his fatal Persian expedition Julian appears to have issued certain instructions about the rebuilding of the Temple in Jerusalem. Whether the initiative for this came from the Jewish community, or was from the emperor himself, is unclear, the sources being as divided on this point as they are on the exact nature of the events that brought the work to a halt. According to Ammianus Marcellinus, the one pagan account that survives,
‘… magnitudine operum gestiens propagare, ambitiosum quondam apud Hierosolymam templum, quod post multa et interneciva certamina, obsidiente Vespasiano, posteaque Tito, aegre est expugnatum, instaurare sumptibus cogitabat immodicis, negotiumque maturandum Alypio dederat Antiochensi, qui olim Britannias curaverat pro praefectis. cum itaque rei idem fortiter instaret Alypius, iuvaretque provinciae rector, metuendi globi flammarum prope fundamenta crebris assultibus erumpentes, fecere locum exustis aliquotiens operantibus inaccessum, hocque modo elemento destinatius repellente, cessavit inceptum’.