What is the meaning of Matthew 21:23?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

When Jesus returned to the temple courts and began to teach, the chief priests and elders of the people came up to Him. “By what authority are You doing these things?” they asked. “And who gave You this authority?”

Berean Standard Bible (BSB)

When he had come into the temple, the chief priests and the elders of the people came to him as he was teaching, and said, “By what authority do you do these things? Who gave you this authority?”

World English Bible (WEB)

And{G2532} when he{G846} was come{G2064}{(G5631)} into{G1519} the temple{G2411}, the chief priests{G749} and{G2532} the elders{G4245} of the people{G2992} came{G4334}{(G5656)} unto him{G846} as he was teaching{G1321}{(G5723)}, and said{G3004}{(G5723)}, By{G1722} what{G4169} authority{G1849} doest thou{G4160}{(G5719)} these things{G5023}? and{G2532} who{G5101} gave{G1325}{(G5656)} thee{G4671} this{G5026} authority{G1849}?

Strong's King James

(23) He entered into the Palace-Temple. The leading priests and the people's elders came to Him while He taught and said, "By what authority do this? Who gave You this authority?"

The F.O.G*

[23] Returning to the Temple courts, the religious leaders confronted Him while He taught: "By what authority do You do these things? Who gave You this right?"

The F.O.G Paraphrase

And he having come to the temple, there came to him when teaching the chief priests and the elders of the people, saying, ‘By what authority dost thou do these things? and who gave thee this authority?’

Young's Literal Translation