After this it is reasonable to believe that when Eusebius states the four Gospels, and the Acts of the Apostles, as uncontradicted, uncontested, and acknowledged by all; and when he places them in opposition, not only to those which were spurious, in our sense of that term, but to those which were controverted, and even to those which were well known and approved by many, yet doubted of by some; he represents not only the sense of his own age, but the result of the evidence which the writings of prior ages, from the apostles' time to his own, had furnished to his inquiries. The opinion of Eusebius and his contemporaries appears to have been founded upon the testimony of writers whom they then called ancient: and we may observe, that such of the works of these writers as have come down to our times entirely confirm the judgment, and support the distinction which Eusebius proposes. The books which he calls "books universally acknowledged" are in fact used and quoted in time remaining works of Christian writers, during the 250 years between the apostles' time and that of Eusebius, much more frequently than, and in a different manner from, those the authority of which, he tells us, was disputed. SECTION IX. Our historical Scriptures were attacked by the early adversaries of Christianity, as containing the accounts upon which the Religion was founded. Near the middle of the second century, Celsus, a heathen philosopher, wrote a professed treatise against Christianity. To this treatise Origen, who came about fifty years after him, published an answer, in which he frequently recites his adversary's words and arguments. The work of Celsus is lost; but that of Origen remains. Origen appears to have given us the words of Celsus, where he professes to give them, very faithfully; and amongst other reasons for thinking so, this is one, that the objection, as stated by him from Celsus, is sometimes stronger than his own answer. I think it also probable that Origen, in his answer, has retailed a large portion of the work of Celsus: "That it may not be suspected," he says, "that we pass by any chapters because we have no answers at hand, I have thought it best, according to my ability, to confute everything proposed by him, not so much observing the natural order of things, as the order which he has taken himself." (Orig. cont. Cels. I. i. sect. 41.)