καὶ ὅταν συναγάγητε τὴν συναγωγὴν, σαλπιεῖτε, καὶ οὐ σημασίᾳ.

1. καὶ
   and
2. ὅταν
   whenever
   when
3. συναγάγητε
   you gather
4. τὴν
   the
5. συναγωγὴν
   congregation
6.  
   ,
    
7. σαλπιεῖτε
   you will sound
   you shall sound the trumpet, you will sound a trumpet
8.  
   ,
    
9. καὶ
   and
10. οὐ
    not
11. σημασίᾳ
    significance
    sign, mark
12.  
    .
     

And whenever you gather the congregation, you will sound the trumpet, but not as a signal.