ἐὰν δὲ ἐν τῷ φωτὶ περιπατῶμεν, ὡς αὐτός ἐστιν ἐν τῷ φωτί, κοινωνίαν ἔχομεν μετ᾽ ἀλλήλων, καὶ τὸ αἷμα Ἰησοῦ Χριστοῦ τοῦ υἱοῦ αὐτοῦ καθαρίζει ἡμᾶς ἀπὸ πάσης ἁμαρτίας.

1. ἐὰν
   if
2. δὲ
   but
   and
3. ἐν
   in
4. τῷ
   the
   to the
5. φωτὶ
   light
6. περιπατῶμεν
   we walk
7.  
   ,
    
8. ὡς
   as
9. αὐτός
   himself
   he
10. ἐστιν
    is
11. ἐν
    in
12. τῷ
    the
    to the
13. φωτί
    light
14.  
    ,
     
15. κοινωνίαν
    relationship
    partnership
16. ἔχομεν
    we have
17. μετ᾽
    with
18. ἀλλήλων
    one another
19.  
    ,
     
20. καὶ
    and
21. τὸ
    the
22. αἷμα
    blood
23. Ἰησοῦ
    Jesus
24. Χριστοῦ
    Christ
25. τοῦ
    of the
    the
26. υἱοῦ
    son
27. αὐτοῦ
    his
28. καθαρίζει
    cleanses
29. ἡμᾶς
    us
30. ἀπὸ
    from
31. πάσης
    all
32. ἁμαρτίας
    sin
    sins
33.  
    .
     

But if we walk in the light, as he himself is in the light, we have relationship with one another, and the blood of Jesus Christ his son cleanses us from all sin.