Sentence:  For to discover this matter the better, he saith consequently: That the nature of virtuous men and those who have noble bringing up, is directly opposite unto that of long-tongued persons; and joining the reasons by which a man ought not to <WSD>bewray</WSD> his secret, together with those evils and inconveniences which curiosity and much babble do bring, and confirming all by fine similitudes and notable examples: .... 
Meaning of the word marked with <WSD> tags:  To expose (a deception).