24 “I’ll tell you by what authority I do these things if you answer one question,” Jesus replied.
25 “Did John’s authority to baptize come from heaven, or was it merely human?”They talked it over among themselves. “If we say it was from heaven, he will ask us why we didn’t believe John.
26 But if we say it was merely human, we’ll be mobbed because the people believe John was a prophet.”
27 So they finally replied, “We don’t know.”And Jesus responded, “Then I won’t tell you by what authority I do these things.
28 “But what do you think about this? A man with two sons told the older boy, ‘Son, go out and work in the vineyard today.’
29 The son answered, ‘No, I won’t go,’ but later he changed his mind and went anyway.
30 Then the father told the other son, ‘You go,’ and he said, ‘Yes, sir, I will.’ But he didn’t go.