The hope that his father had scarce dared to entertain for his manhood was already accomplished in his youth.
In these preparations for future success passed three years of the life of Ulpius.

At the expiration of that period the death of Julian darkened the brilliant prospects of the Pagan world.

Scarcely had the priests of Serapis recovered the first shock of astonishment and grief consequent upon the fatal news of the vacancy in the imperial throne, when the edict of toleration issued by Jovian, the new Emperor, reached the city of Alexandria, and was elevated on the walls of the temple.
The first sight of this proclamation (permitting freedom of worship to the Christians) aroused in the highly wrought disposition of Ulpius the most violent emotions of anger and contempt.

The enthusiasm of his character and age, guided invariably in the one direction of his worship, took the character of the wildest fanaticism when he discovered the Emperor's careless infringement of the supremacy of the temple.

He volunteered in the first moments of his fury to tear down the edict from the walls, to lead an attack on the meetings of the triumphant Christians, or to travel to the imperial abode and exhort Jovian to withdraw his act of perilous leniency ere it was too late.
With difficulty did his more cautious confederates restrain him from the execution of his impetuous designs.