σὺ  [36  verses](pron 2nd sg nom) "Thee/you" is su , which means "you" in the second-person pronoun in form of a singular subject. -- The  "you" here in the second-person pronoun in form of a singular subject. When it has no verb, the verb "is" or the previous verb is assumed. When it has a verb, the subject of the sentence is part of the verb, its explicit use repeats the idea of who is speaking, "you." Saying "you yourself" captures this feeling in English. missing "yourself" -- (MW)  The subjective pronoun repeats the information in the verb so it should be repeated in English like "you yourself." MW -- Missing Word -- This subject pronoun duplicates information in the verb so it needs a "yourself" after "you" for emphasis.