"Nor will I tell you," said Jesus, "by what authority I do these things."

And Jesus said, And I will not make clear to you by what authority I do these things.

"Then I," said Jesus, "refuse to tell you what authority I have to do these things."

And Jesus said unto them,.... Since they would not give him a direct answer to his question:
neither tell I you by what authority I do these things; nor was there any need of it; they might easily perceive by what he had said, from whence he professed to have received his authority, from God, and not men; See Gill on Matthew 21:27.