ὃς δ᾽ ἂν τηρῇ αὐτοῦ τὸν λόγον, ἀληθῶς ἐν τούτῳ ἡ ἀγάπη τοῦ Θεοῦ τετελείωται. ἐν τούτῳ γινώσκομεν ὅτι ἐν αὐτῷ ἐσμεν.

1. ὃς
   who
2. δ᾽
   but
   and
3. ἂν
   would
4. τηρῇ
   keeps
5. αὐτοῦ
   his
6. τὸν
   the
7. λόγον
   word
8.  
   ,
    
9. ἀληθῶς
   truly
10. ἐν
    in
11. τούτῳ
    this
12. ἡ
    the
    or
13. ἀγάπη
    love
14. τοῦ
    of the
    the
15. Θεοῦ
    God
16. τετελείωται
    has been perfected
    has been completed
17.  
    .
     
18. ἐν
    in
19. τούτῳ
    this
20. γινώσκομεν
    we know
21. ὅτι
    that
    because
22. ἐν
    in
23. αὐτῷ
    to him
24. ἐσμεν
    we are
25.  
    .
     

But whoever keeps his word, in this one the love of God has truly been perfected. By this we know that we are in him.