§ 1. To pass over minute details, these were the principal events of the year. But Julian, who in his third consulship had taken as his colleague Sallustius, the prefect of Gaul now entered on his fourth year, and by a novel arrangement took as his colleague a private individual; an act of which no one recollected an instance since that of Diocletian and Aristobulus.
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And although, foreseeing in his anxious mind the various accidents that might happen, he urged on with great diligence all the endless preparations necessary for his expedition, yet distributing his diligence everywhere; and being eager to extend the recollection of his reign by the greatness of his exploits, he proposed to rebuild at a vast expense the once magnificent temple of Jerusalem, which after many deadly contests was with difficulty taken by Vespasian and Titus, who succeeded his father in the conduct of the siege. And he assigned the task to Alypius of Antioch, who had formerly been proprefect of Britain.
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But though Alypius applied himself vigorously to the work, and though the governor of the province co-operated with him, fearful balls of fire burst forth with continual eruptions close to the foundations, burning several of the workmen and making the spot altogether inaccessible. And thus the very elements, as if by some fate, repelling the attempt, it was laid aside.
https://www.gutenberg.org/files/28587/28587-h/28587-h.htm#Page_317
Other account, by Christians: https://www.tertullian.org/fathers/gregory_nazianzen_3_oration5.htm
Do a CTRL F for "temple" https://www.newadvent.org/fathers/200104.htm