ὁ πιστεύων εἰς αὐτὸν οὐ κρίνεται, ὁ δὲ μὴ πιστεύων ἤδη κέκριται, ὅτι μὴ πεπίστευκεν εἰς τὸ ὄνομα τοῦ μονογενοῦς υἱοῦ τοῦ Θεοῦ.

1. ὁ
   the
2. πιστεύων
   believing
   trusting
3. εἰς
   into
   to
4. αὐτὸν
   him
5. οὐ
   not
6. κρίνεται
   is judged
7.  
   ,
    
8. ὁ
   the
9. δὲ
   but
   and
10. μὴ
    not
11. πιστεύων
    believing
    trusting
12. ἤδη
    already
13. κέκριται
    has been judged
    it has been judged, he has been judged
14.  
    ,
     
15. ὅτι
    that
    because
16. μὴ
    not
17. πεπίστευκεν
    has believed
18. εἰς
    into
    to
19. τὸ
    the
20. ὄνομα
    name
21. τοῦ
    of the
    the
22. μονογενοῦς
    only begotten
    only born
23. υἱοῦ
    son
24. τοῦ
    of the
    the
25. Θεοῦ
    God
26.  
    .
     

The one believing in him is not judged, but the one not believing has already been judged, because he has not believed in the name of the only begotten Son of God.