καὶ ὃς ἐὰν θέλῃ ὑμῶν γενέσθαι πρῶτος, ἔσται πάντων δοῦλος·

1. καὶ
   and
2. ὃς
   who
3. ἐὰν
   if
4. θέλῃ
   wishes
5. ὑμῶν
   your
6. γενέσθαι
   to become
7. πρῶτος
   first
8.  
   ,
    
9. ἔσται
   will be
10. πάντων
    all
    of all
11. δοῦλος
    slave
12.  
    ·
     

And whoever wants to become first among you will be the slave of all.