Γνωρίζομεν οὖν ἡμεῖς τῷ βασιλεῖ, ὅτι ἂν ἡ πόλις ἐκείνη οἰκοδομηθῇ, καὶ τὰ τείχη αὐτῆς καταρτισθῇ, οὐκ ἔστι σοι εἰρήνη.

1. Γνωρίζομεν
   We know
   We recognize
2. οὖν
   therefore
3. ἡμεῖς
   we
4. τῷ
   the
   to the
5. βασιλεῖ
   king
6.  
   ,
    
7. ὅτι
   that
   because
8. ἂν
   would
9. ἡ
   the
   or
10. πόλις
    city
11. ἐκείνη
    that
12. οἰκοδομηθῇ
    is built
    be built, it may be built
13.  
    ,
     
14. καὶ
    and
15. τὰ
    the
16. τείχη
    walls
17. αὐτῆς
    her
    of it
18. καταρτισθῇ
    be completed
19.  
    ,
     
20. οὐκ
    not
21. ἔστι
    is
22. σοι
    to you
23. εἰρήνη
    peace
24.  
    .
     

We therefore inform the king that if that city is built and its walls are completed, there will be no peace for you.