ἔλεγξον [4 verses](verb 2nd sg aor imperat act) "Tell him his fault" is elegcho, which "to disgrace," "to put to shame," "to cross-examine," "to question," "to test," "to prove," "to refute," "to put right," "to get the better of," "to expose," and "to decide a dispute."  - "Tell him his fault" is from a verb from the word that means "to disgrace," "to put to shame," "to cross-examine," "to expose," and "to decide a dispute." Jesus only uses it four times and seems to mean "accuse."