ἐν τούτῳ γινώσκομεν ὅτι ἐν αὐτῷ μένομεν καὶ αὐτὸς ἐν ἡμῖν, ὅτι ἐκ τοῦ Πνεύματος αὐτοῦ δέδωκεν ἡμῖν.

1. ἐν
   in
2. τούτῳ
   this
3. γινώσκομεν
   we know
4. ὅτι
   that
   because
5. ἐν
   in
6. αὐτῷ
   to him
7. μένομεν
   we remain
8. καὶ
   and
9. αὐτὸς
   himself
   he
10. ἐν
    in
11. ἡμῖν
    to us
    us
12.  
    ,
     
13. ὅτι
    that
    because
14. ἐκ
    from
    out of
15. τοῦ
    of the
    the
16. Πνεύματος
    Spirit
17. αὐτοῦ
    his
18. δέδωκεν
    has given
19. ἡμῖν
    to us
    us
20.  
    .
     

by this we know that we remain in him and he in us, because he has given us of his Spirit.