Καὶ ἐσται ἐὰν λέγωσι πρὸς ὑμᾶς οἱ υἱοὶ ὑμῶν, τίς ἡ λατρεία αὕτη;

1. Καὶ
   And
2. ἐσται
   will be
3. ἐὰν
   if
4. λέγωσι
   they say
5. πρὸς
   to
   toward
6. ὑμᾶς
   you
7. οἱ
   the
8. υἱοὶ
   sons
9. ὑμῶν
   your
10.  
    ,
     
11. τίς
    someone
    who
12. ἡ
    the
    or
13. λατρεία
    worship
    in service, service
14. αὕτη
    this
15.  
    ;
     

And it will be if your sons say to you, What is this service?