Ὅτι ἐβουλεύσαντο ἐν ὁμονοίᾳ ἐπιτοαυτὸ, κατὰ σοῦ διαθήκην διέθεντο·

1. Ὅτι
   That
   Because
2. ἐβουλεύσαντο
   they planned
3. ἐν
   in
4. ὁμονοίᾳ
   concord
   harmony
5. ἐπιτοαυτὸ
   together
6.  
   ,
    
7. κατὰ
   according to
8. σοῦ
   your
9. διαθήκην
   covenant
10. διέθεντο
    they made
    they established, made
11.  
    ·
     

Because they planned together in harmony, they made a covenant against you,