Immediately after these points, Celsus, imagining that the Jews are Egyptians by descent, and had abandoned Egypt, after revolting against the Egyptian state, and despising the customs of that people in matters of worship, says that “they suffered from the adherents of Jesus, who believed in Him as the Christ, the same treatment which they had inflicted upon the Egyptians; and that the cause which led to the new state of things in either instance was rebellion against the state.”
Now let us observe what Celsus has here done. The ancient Egyptians, after inflicting many cruelties upon the Hebrew race, who had settled in Egypt owing to a famine which had broken out in Judea, suffered, in consequence of their injustice to strangers and suppliants, that punishment which divine Providence had decreed was to fall on the whole nation for having combined against an entire people, who had been their guests, and who had done them no harm; and after being smitten by plagues from God, they allowed them, with difficulty, and after a brief period, to go wherever they liked, as being unjustly detained in slavery.
Because, then, they were a selfish people, who honoured those who were in any degree related to them far more than they did strangers of better lives, there is not an accusation which they have omitted to bring against Moses and the Hebrews,— not altogether denying, indeed, the miracles and wonders done by him, but alleging that they were wrought by sorcery, and not by divine power. Moses, however, not as a magician, but as a devout man, and one devoted to the God of all things, and a partaker in the divine Spirit, both enacted laws for the Hebrews, according to the suggestions of the Divinity, and recorded events as they happened with perfect fidelity.
Source: Against Celsus (New Advent)