But that certain Christians and (all) Jews should maintain, the former that there has already descended, the latter that there will descend, upon the earth a certain God, or Son of a God, who will make the inhabitants of the earth righteous, is a most shameless assertion, and one the refutation of which does not need many words. Now here he appears to pronounce correctly regarding not certain of the Jews, but all of them, that they imagine that there is a certain (God) who will descend upon the earth; and with regard to Christians, that certain of them say that He has already come down. For he means those who prove from the Jewish Scriptures that the advent of Christ has already taken place, and he seems to know that there are certain heretical sects which deny that Christ Jesus was predicted by the prophets.
Origen elucidates upon Celsus's meaning and interprets this passage as all Jews rejecting Christ as yet to come, and "
certain" Christians say that he has.
Certain/τίνες may not necessarily be a quantitative number, and that "
certain", i.e.
those regarding may be intended.
Calesus only divides Christians and Jews into a fifty-fifty split. When he says
certain Christians, he is further dividing Christians into different groups, without elucidating further who is the in the majority and minority.