οὐχ ὅτι τὸν πατέρα τις ἑώρακεν, εἰ μὴ ὁ ὢν παρὰ τοῦ Θεοῦ, οὗτος ἑώρακε τὸν πατέρα.

1. οὐχ
   not
2. ὅτι
   that
   because
3. τὸν
   the
4. πατέρα
   father
5. τις
   someone
   who
6. ἑώρακεν
   has seen
7.  
   ,
    
8. εἰ
   if
9. μὴ
   not
10. ὁ
    the
11. ὢν
    which
    being, of which
12. παρὰ
    from
    beside, among
13. τοῦ
    of the
    the
14. Θεοῦ
    God
15.  
    ,
     
16. οὗτος
    this
17. ἑώρακε
    has seen
18. τὸν
    the
19. πατέρα
    father
20.  
    .
     

Not that anyone has seen the Father, except the one who is from God; this one has seen the Father.