Satan:--

"For among us the prince of the wicked spirits is called the
serpent, and Satan, and the devil, as you can learn by looking into
our writings, and that he would be sent into the fire with his host,
and the men who followed him, and would be punished for an endless
duration, Christ foretold." (Apol. I. ch. xxviii.)

In the same short chapter he asserts in very weighty words his belief in
the ever-watchful providence of God:--

"And if any one disbelieves that God cares for these things (the
welfare of the human race), he will thereby either insinuate that
God does not exist, or he will assert that though He exists He
delights in vice, or exists like a stone, and that neither virtue
nor vice are anything, but only in the opinion of men these things
are reckoned good or evil, and this is the greatest profanity and
wickedness." (Apol. I. ch. xxviii.)

Shortly after this he tells the heathen Emperor that the mission and
work of Jesus Christ had been predicted:--

"There were amongst the Jews certain men who were prophets of God,
through whom the Prophetic Spirit published beforehand things that
were to come to pass, ere ever they happened. And their prophecies,
as they were spoken and when they were uttered, the kings who
happened to be reigning among the Jews at the several times
carefully preserved in their possession, when they had been arranged
in books by the prophets themselves in their own Hebrew language....
In these books, then, of the prophets, we found Jesus Christ