1 tc The construction is “a man of friends” (cf. NASB) meaning a man who has friends (a genitive of the thing possessed). C. H. Toy, however, suggests reading יֵשׁ (yesh) instead of אִישׁ (’ish), along with some of the Greek
2 tn The text simply has לְהִתְרֹעֵעַ (lÿhitro’ea’), which means “for being crushed” or “to be shattered” (but not “to show oneself friendly” as in the KJV). What can be made of the sentence is that “a man who has [many] friends [may have them] for being crushed” – the infinitive giving the result (i.e., “with the result that he may be crushed by them”).
