Side line: “kata sarka” (according to the flesh) must be taken as adverbial, it qualifies verbs for “knowing” – how they know or in this sense not knowing – “not according to the flesh.”

「血气」（中译﹕外貌；﹕肉体）﹕是词，指「知」、「」人这动词。他们如何（或不）﹕「不肉体」。