Celsus should at least have doubted
Having said this much on this passage as well, let us look at another statement of Celsus, which runs thus: “Since men are born bound to a body — whether for the sake of the ordering of the universe, or paying the penalty for sin, or because the soul is weighed down by certain passions until it is cleansed in the appointed cycles, for according to Empedocles ‘thrice ten thousand seasons it must wander far from the blessed, becoming in the course of time every kind of mortal form’ (Empedocles, fragment 115) — we must therefore believe that they have been handed over to certain keepers of this prison.”
See how here too he wavers, as a man will, over so many questions, and by setting out the opinions of several thinkers on the cause of our coming into being he shows a certain caution, not daring to declare any one of them false. Would it not, then, have befitted such a man, once he had resolved neither to assent at random nor boldly to set aside the views of the ancients, at least to doubt, if he did not wish to believe, about the teaching of the Jews set forth in their prophets and about Jesus? Would it not have befitted him to consider that it was likely that those who served the God of all, and who for the sake of honour toward him and toward what they believed he had laid down as law often accepted countless dangers and deaths, were not overlooked by God, but that some manifestation came to them also, since they had disdained the works of human art in statues and tried to ascend by reason to the God over all himself?
He ought to have considered that the common Father and Creator of all, who sees all things and hears all things, judges according to its worth the choice of each person that seeks him and wishes to be devout, and grants to these also some fruit of his protection, so that they may further increase the conception of him which they have once received. For if Celsus had reasoned this out, and with him those who hate Moses and the prophets among the Jews, and Jesus, and his genuine disciples who wore themselves out for the sake of his word, they would not have heaped such abuse on Moses and the prophets and Jesus and his apostles. Nor would they have rejected the Jews alone of all the nations on earth, saying that they were worse even than the Egyptians, who, as far as lay in them, brought the honour paid to the divine down even to irrational animals, whether from superstition or for whatever other cause or error.
We have said this not to urge anyone to doubt about the Christian teaching, but to show that for those who revile the teaching of Christians in every way it would be better at least to doubt about these matters, and not to speak so rashly about Jesus or his disciples. For they speak of things they do not know, and they make their declarations without what the Stoics call the cognitive impression and without any other criterion; and on the criterion each school of philosophers has argued for its own view, as it thought best.
Greek
Τοσαῦτα δὲ καὶ εἰς τοῦτον εἰπόντες τὸν τόπον ἴδωμεν τοῦ Κέλσου καὶ ἄλλην λέξιν, οὕτως ἔχουσαν· ἐπειδὴ δὲ σώματι συνδεθέντες ἄνθρωποι γεγόνασιν, εἴτ᾿ οἰκονομίας τῶν ὅλων ἕνεκεν εἴτε ποινὰς ἁμαρτίας ἀποτίνοντες, εἴθ᾿ ὑπὸ (πα) θημάτων τινῶν τῆς ψυχῆς βαρυνθείσης, μέχρι ἂν ταῖς τεταγμέναις περιόδοις ἐκκαθαρθῇ· δεῖ γὰρ κατὰ τὸν Ἐμπεδοκλέα τρίς μιν μυρίας ὥρας ἀπὸ μακάρων ἀλάλησθαι, γινομένην παντοίαν διὰ χρόνου ἰδέαν θνητῶν· πειστέον οὖν ὅτι παραδέδονταί τισιν ἐπιμεληταῖς τοῦδε τοῦ δεσμωτηρίου. ὅρα δὴ καὶ ἐν τούτοις περὶ πόσων ἀνθρωπίνως ἀμφιβάλλων καὶ παραθέμενος πλειόνων δόγματα περὶ τῆς αἰτίας τῆς γενέσεως ἡμῶν ἐμφαίνει τινὰ εὐλάβειαν, μὴ τολμῶν ἀποφήνασθαί τι τούτων ψεῦδος εἶναι. ἆρ᾿ οὖν οὐκ ἦν κατὰ τὸν τοιοῦτον, καὶ ἅπαξ κρίναντα μήτε ὡς ἔτυχε συγκαταθέσθαι μήτε τολμηρῶς ἀθετῆσαι τὰ δόξαντα τοῖς ἀρχαίοις. καὶ περὶ τοῦ Ἰουδαίων λόγου δηλουμένου παρὰ τοῖς ἐκείνων προφήταις καὶ περὶ τοῦ Ἰησοῦ, εἰ μὴ ἐβούλετο πιστεῦσαι, κἂν ἀμφιβάλλειν καὶ σκοπῆσαι ὅτι εἰκὸς ἦν καὶ τοὺς θεραπεύσαντας τὸν τῶν ὅλων θεὸν καὶ ἕνεκεν τῆς εἰς τοῦτον τιμῆς καὶ εἰς τὰ πεπιστευμένα ὑπ᾿ αὐτοῦ νενομοθετῆσθαι πολλάκις μυρίους κινδύνους καὶ θανάτους ἀναδεξαμένους μὴ ὑπερεωρᾶσθαι ὑπὸ τοῦ θεοῦ, ἀλλὰ καὶ αὐτοῖς τινα ἐπιφάνειαν γεγονέναι, τὰ μὲν τῆς ἀνθρωπίνης περὶ τὰ ἀγάλματα τέχνης ὑπερηφανήσασιν ἀναβαίνειν δὲ πειραθεῖσι τῷ λογισμῷ ἐπ᾿ αὐτὸν τὸν ἐπὶ πᾶσι θεόν; ἐχρῆν δ᾿ αὐτὸν σκοπῆσαι ὅτι πάντ᾿ ἐφορῶν καὶ πάντ᾿ ἐπακούων ὁ κοινὸς πάντων πατὴρ καὶ δημιουργὸς τὴν ἑκάστου προαίρεσιν, ζητοῦσαν αὐτὸν καὶ εὐσεβεῖν βουλομένην, κατ᾿ ἀξίαν κρίνων καὶ τούτοις τινὰ ἀπονέμει καρπὸν τῆς προστασίας αὐτοῦ, ἵνα μᾶλλον αὔξωσιν ἣν ἅπαξ παρειλήφασι περὶ αὐτοῦ ἔννοιαν. ταῦτα γὰρ εἰ ἐλογίσατο Κέλσος καὶ οἱ μισοῦντες Μωϋσέα καὶ τοὺς ἐν Ἰουδαίοις προφήτας καὶ Ἰησοῦν καὶ τοὺς καμόντας διὰ τὸν λόγον αὐτοῦ γνησίους μαθητὰς αὐτοῦ. οὐκ ἂν οὕτως διελοιδορήσαντο Μωϋσεῖ καὶ τοῖς προφήταις καὶ Ἰησοῦ καὶ τοῖς ἀποστόλοις αὐτοῦ· οὐδὲ μόνους παρὰ πάντα τὰ ἐπὶ γῆς ἔθνη Ἰουδαίους ἀπεδοκίμαζον, λέγοντες αὐτοὺς εἶναι καὶ Αἰγυπτίων χείρονας, τῶν μέχρι ἀλόγων ζῴων εἴτε κατὰ δεισιδαιμονίαν εἴτε κατὰ οἱανδήποτ᾿ αἰτίαν ἢ πλάνην καταγαγόντων τὸ ὅσον ἐπ᾿ αὐτοῖς τὴν πρὸς τὸ θεῖον τιμήν. ταῦτα δ᾿ εἰρήκαμεν οὐκ ἐπὶ τὸ ἀμφιβάλλειν προτρεπόμενοί τινας περὶ τοῦ κατὰ χριστιανισμὸν λόγου ἀλλὰ παριστάντες ὅτι τοῖς πάντῃ διαλοιδορουμένοις τῷ Χριστιανῶν λόγῳ αἱρετώτερόν ἐστι κἂν ἀμφιβάλλειν περὶ αὐτῶν καὶ μὴ οὕτω θρασέως λέγειν περὶ τοῦ Ἰησοῦ ἢ τῶν μαθητῶν αὐτοῦ, ἃ μὴ ἐπίστανται καὶ ἀποφαίνονται οὐ μετὰ τῆς καλουμένης παρὰ τοῖς ἀπὸ τῆς Στοᾶς „καταληπτικῆς φαντασίας“ οὐδ᾿ ἀπ᾿ ἄλλου τινὸς κριτηρίου, περὶ οὗ ἑκάστη τῶν φιλοσόφων αἵρεσις τὸ φαινόμενον, ὡς ἔδοξε, κατεσκεύασεν.