ἡμεῖς οἴδαμεν ὅτι μεταβεβήκαμεν ἐκ τοῦ θανάτου εἰς τὴν ζωήν, ὅτι ἀγαπῶμεν τοὺς ἀδελφούς· ὁ μὴ ἀγαπῶν τὸν ἀδελφὸν μένει ἐν τῷ θανάτῳ.

1. ἡμεῖς
   we
2. οἴδαμεν
   we know
3. ὅτι
   that
   because
4. μεταβεβήκαμεν
   have passed
5. ἐκ
   from
   out of
6. τοῦ
   of the
   the
7. θανάτου
   death
   of death
8. εἰς
   into
9. τὴν
   the
10. ζωήν
    life
11.  
    ,
     
12. ὅτι
    that
    because
13. ἀγαπῶμεν
    we love
    we should love
14. τοὺς
    the
15. ἀδελφούς
    brothers
16.  
    ·
     
17. ὁ
    the
18. μὴ
    not
19. ἀγαπῶν
    loving
20. τὸν
    the
21. ἀδελφὸν
    brother
22. μένει
    remains
23. ἐν
    in
24. τῷ
    the
    to the
25. θανάτῳ
    death
    by death
26.  
    .
     

We know that we have passed from death into life, because we love the brothers. The one not loving the brother remains in death.