Matthew 21:28 WEB

²⁶  But if we say, 'From men,' we fear the multitude, for all hold John as a prophet.'

²⁷  They answered Jesus, and said, 'We don't know.' He also said to them, 'Neither will I tell you by what authority I do these things.

²⁸  But what do you think? A man had two sons, and he came to the first, and said, 'Son, go work today in my vineyard.'

²⁹  He answered, 'I will not,' but afterward he changed his mind, and went.

³⁰  He came to the second, and said the same thing. He answered, 'I go, sir,' but he didn't go.