ἔστω δὲ ὁ λόγος ὑμῶν ναὶ ναί, οὒ οὔ· τὸ δὲ περισσὸν τούτων ἐκ τοῦ πονηροῦ ἐστιν.

1. ἔστω
   let it be
2. δὲ
   but
   and
3. ὁ
   the
4. λόγος
   word
   reason, speech
5. ὑμῶν
   your
6. ναὶ
   yes
7. ναί
   yes
8.  
   ,
    
9. οὒ
   not
10. οὔ
    not
11.  
    ·
     
12. τὸ
    the
13. δὲ
    but
    and
14. περισσὸν
    excessive
    excess, extraordinary
15. τούτων
    of these
    these
16. ἐκ
    from
    out of
17. τοῦ
    of the
    the
18. πονηροῦ
    evil
19. ἐστιν
    is
20.  
    .
     

But let your word be yes, yes or no, no; anything beyond these is from evil.