αὕτη δέ ἐστιν ἡ αἰώνιος ζωή, ἵνα γινώσκωσί σε τὸν μόνον ἀληθινὸν Θεὸν καὶ ὃν ἀπέστειλας Ἰησοῦν Χριστόν.

1. αὕτη
   this
2. δέ
   but
   and
3. ἐστιν
   is
4. ἡ
   the
   or
5. αἰώνιος
   eternal
6. ζωή
   life
7.  
   ,
    
8. ἵνα
   so that
9. γινώσκωσί
   they may know
10. σε
    you
11. τὸν
    the
12. μόνον
    only
13. ἀληθινὸν
    true
14. Θεὸν
    God
15. καὶ
    and
16. ὃν
    which
    whom, being
17. ἀπέστειλας
    you sent
18. Ἰησοῦν
    Jesus
19. Χριστόν
    Christ
20.  
    .
     

This is eternal life, that they may know you, the only true God, and Jesus Christ whom you sent.