εἶπεν οὖν ὁ Ἰησοῦς πρὸς αὐτόν· ἐὰν μὴ σημεῖα καὶ τέρατα ἴδητε, οὐ μὴ πιστεύσητε.

1. εἶπεν
   said
2. οὖν
   therefore
3. ὁ
   the
4. Ἰησοῦς
   Jesus
5. πρὸς
   to
   toward
6. αὐτόν
   him
7.  
   ·
    
8. ἐὰν
   if
9. μὴ
   not
10. σημεῖα
    signs
11. καὶ
    and
12. τέρατα
    wonders
13. ἴδητε
    you see
14.  
    ,
     
15. οὐ
    not
16. μὴ
    not
17. πιστεύσητε
    you may believe
    you will believe, you believe
18.  
    .
     

Therefore Jesus said to him, If you do not see signs and wonders, you will not believe.