Philoxenus of Mabbug

"Flesh and blood cannot inherit the kingdom of heaven," the blessed Paul teacheth us, or as a man might say, "So long as the motions of a man are established by flesh and blood he is unable to inherit the spiritual knowledge of Christ," which, as in a parable, he calleth the kingdom of heaven; and although this verse hath other meanings in respect of other passions, yet as regardeth the matter which is under discussion we may suitably apply it with this meaning. For the true kingdom is the knowledge which erreth not, and doubteth not, but seeth everything in its proper place distinctly, as well as things which are above nature, according to the capacity which is given unto created beings; and he whose life is established by means of motions of flesh and blood is unable to become the heir of this knowledge, and if it happen that he receive it by the tradition of words, he heareth the words from others, and it is not that knowledge which itself hath revealed itself in his soul, for this knowledge is beyond words, and beyond appellations and names.