John Gill - Exposition
John Gill
And they answered and said unto Jesus,.... Being reduced by this dilemma to the greatest streight and difficulty; we cannot tell: they could, if they would, but they did not care to tell; they knew if they did, they should expose themselves one way or other: and Jesus answering, saith unto them, neither do I tell you by what authority I do these things; [See comments on Matthew 21:27].