καὶ ἐλογίζοντο πρὸς ἑαυτοὺς λέγοντες· ἐὰν εἴπωμεν, ἐξ οὐρανοῦ, ἐρεῖ· διατί οὖν οὐκ ἐπιστεύσατε αὐτῷ;

1. καὶ
   and
2. ἐλογίζοντο
   they were reasoning
   were considering, they reckoned
3. πρὸς
   to
   toward
4. ἑαυτοὺς
   themselves
5. λέγοντες
   saying
6.  
   ·
    
7. ἐὰν
   if
8. εἴπωμεν
   let us say
   we say, let us speak
9.  
   ,
    
10. ἐξ
    from
    out of
11. οὐρανοῦ
    heaven
12.  
    ,
     
13. ἐρεῖ
    will say
14.  
    ·
     
15. διατί
    why
16. οὖν
    therefore
17. οὐκ
    not
18. ἐπιστεύσατε
    did you believe
    you believed, you trusted
19. αὐτῷ
    to him
20.  
    ;
     

And they were reasoning among themselves, saying, If we say, From heaven, he will say, Why therefore did you not believe him?