Γνοὺς δὲ Αὐνὰν, ὅτι οὐκ αὐτῷ ἔσται τὸ σπέρμα, ἐγένετο ὅταν εἰσήρχετο πρὸς τὴν γυναῖκα τοῦ ἀδελφοῦ αὐτου, ἐξέχεεν ἐπὶ τὴν γῆν, τοῦ μὴ δοῦναι σπέρμα τῷ ἀδελφῷ αὐτοῦ.

1. Γνοὺς
   Having known
   Knowing
2. δὲ
   but
   and
3. Αὐνὰν
   Onan
4.  
   ,
    
5. ὅτι
   that
   because
6. οὐκ
   not
7. αὐτῷ
   to him
8. ἔσται
   will be
9. τὸ
   the
10. σπέρμα
    seed
11.  
    ,
     
12. ἐγένετο
    it happened
    became, came into existence
13. ὅταν
    whenever
    when
14. εἰσήρχετο
    he went in
15. πρὸς
    to
    toward
16. τὴν
    the
17. γυναῖκα
    wife
    woman
18. τοῦ
    of the
    the
19. ἀδελφοῦ
    brother
20. αὐτου
    his
21.  
    ,
     
22. ἐξέχεεν
    he poured out
    poured out
23. ἐπὶ
    upon
24. τὴν
    the
25. γῆν
    land
    earth
26.  
    ,
     
27. τοῦ
    of the
    the
28. μὴ
    not
29. δοῦναι
    to give
30. σπέρμα
    seed
31. τῷ
    the
    to the
32. ἀδελφῷ
    brother
33. αὐτοῦ
    his
34.  
    .
     

But Onan, knowing that the offspring would not be his, whenever he went in to his brother's wife, he spilled his seed on the ground so as not to give offspring to his brother.