Mark 11:33

And they answered and said unto Jesus, We cannot tell. And Jesus, answering, saith unto them, Neither do I tell you by what authority I do these things.

Jesus was perfectly willing to give them an account of Himself and of all His actions in the Temple, under one condition. He had one single matter concerning which He desired information from them. If they would answer Him about that, He would be glad to tell them by what authority He was performing His miracles, teaching the people and purging the Temple. The question that Jesus proposed proved a dilemma to the Jewish chiefs: Whether the work of John the Baptist, specifically his baptizing, was done by orders from heaven, from God, or on his own responsibility. This was a poser for them. For, as they reasoned themselves in their perplexity, if they should say: From heaven, then the obvious retort would be: For what reason, then, did you refuse him belief? On the other hand: But, suppose we say, from men? This they also did not dare to answer, for they were afraid of the multitude, for all of the common people sincerely held that John was a prophet. In either direction there lay trouble for them, and so they preferred not to answer; whereupon Jesus informed them that He also would not answer their challenge. Their conscience told them that, if even the baptism of John was from heaven, then the ministry of Jesus with His wonderful miracles and powerful preaching must surely have authority from God. Thus unbelief is objectionable even from the standpoint of mere moral reasoning. The unbelievers cannot deny the power of the Word, but refuse to bow to the truth of it. And so, when driven to bay, they make use of lies, evasions, and excuses.

Summary. Jesus makes His triumphal entry into Jerusalem, performs the miracle of the fig-tree, purges the Temple, explains to His disciples the lesson of the dead tree, and answers the challenge of the Jewish authorities concerning His right to do these things.