Of course he was a man of his time - he was fully man as well as fully God. Therefore, he accepted the universal beliefs of his time.
You're a puzzle, Steve. You opened a thread once, talking about your 'non-realist' Christianity, but later admitted that you're not entirely committed to this view. Well, few of us - apart from bigots of whatever persuasion - would claim absolute certainty in our philosophies of life. Whatever, most of us get the idea that you're some sort of liberal Christian. Fine and dandy.
Then you come out with assertions straight out of the repertoire of traditional Christian dogma - and then go on to show further confusion by citing Lewis' boneheaded 'trilemma', as if this hadn't been exposed as full of holes as a rusty colander lost in the bottom of a lake. Just as Stranger etc have pointed out. I know you have the brains to see the ludicrously simplistic nature of Lewis' argument, so I'm at a loss to know why you feel the need to cite it here. In any case the whole thing has been deconstructed, hanged, drawn and quartered on this site many times, by quite a number of people.
Your attitude strikes me as a bit like some of the automatic responses of Dr Strangelove - despite having been 'socially re-educated' by the Allies after the war, his right arm can't resist an urge to swing upwards in the Nazi salute (not that I'm comparing Christianity with the Nazis)
I do however understand your irritation with Littleroses, who still talks like a fundamentalist in reverse (as Rhiannon has intimated)