All such desires are cut short by the statement: the Word became flesh. It is in his sheer humanity that he is the Revealer. True, his own also see his δόξα (v.14b); indeed if it were not to be seen, there would be no grounds for speaking of revelation. But this is the paradox which runs through the whole gospel: the δόξα is not to be seen alongside the σάρξ as through a window; it is to be seen in the σάρξ and nowhere else. If man wishes to see the δόξα, then it is on the σάρξ that he must concentrate his attention, without allowing himself to fall victim to appearances. The revelation is present in a peculiar hiddenness.
Rudolf Karl Bultmann, Gospel of John: A Commentary
divinity, flesh, glory, humanity, jesus