Justin Martyr — First Apology 28
Among us the prince of the wicked demons is called the serpent and Satan and the devil, as you can learn by looking into our writings. Christ foretold that he would be sent into the fire with his host and the people who follow him, to be punished without end.
For God delays the fulfillment of this because of the human race: he foreknows that some will be saved by repentance, and some even that have not yet been born. In the beginning he made the race with the power to choose the truth and do good; so that all people are without excuse before God, for they were born able to reason and reflect.