ἡνίκα ἂν ἐγκαταλίπητε Κύριον καὶ λατρεύσητε θεοῖς ἑτέροις· καὶ ἐπελθὼν κακώσει ὑμᾶς καὶ ἐξαναλώσει ὑμᾶς ἀνθ ὧν εὖ ἐποίησεν ὑμᾶς.

1. ἡνίκα
   when
2. ἂν
   would
3. ἐγκαταλίπητε
   you forsake
   you abandon, abandon
4. Κύριον
   Lord
5. καὶ
   and
6. λατρεύσητε
   you serve
7. θεοῖς
   gods
8. ἑτέροις
   others
   other
9.  
   ·
    
10. καὶ
    and
11. ἐπελθὼν
    having come upon
    having attacked, having approached
12. κακώσει
    will harm
13. ὑμᾶς
    you
14. καὶ
    and
15. ἐξαναλώσει
    will consume
    he will consume, it will consume
16. ὑμᾶς
    you
17. ἀνθ
    instead of
18. ὧν
    which
    being, of which
19. εὖ
    well
    good
20. ἐποίησεν
    made
    he did, he made
21. ὑμᾶς
    you
22.  
    .
     

When you forsake the Lord and serve other gods, he will come upon you and harm you and consume you instead of the good he did you.