A very crucial verse is the one that tells us that Mary anointed Jesus in Bethany six days before the Passover.   This little verse establishes the entire timeline of Holy Week. Scripture tells us the next day (Saturday, not Sunday) was the triumphant entry.
For clarification see the website writings A Biblical View of Holy Week.
http://www.philandpatti.com/abiblicalviewofholyweek

Bethany was the home of Mary, Martha, Lazarus, and also Simon the Leper. It was about two miles from Jerusalem.

Many in the crowd that met Jesus and shouted Hosanna to Him were expecting a conquering Messiah. They were expecting a political ruler who would free them from the oppression of the Romans (among others).

John 12:16
At first his disciples did not understand all this. Only after Jesus was glorified did they realize that these things had been written about him and that they had done these things to him.

The disciples still do not understand. Many people think of the disciples as being well versed in Jewish law and scripture but they may not have been. They may not have been regular worshipers at all and may have know very little of the prophecies of the Messiah. That may explain why they did not understand so many things, even after Jesus explained things to them. They didn’t understand many things until Jesus was glorified.

The Pharisees were worried that "the whole world has gone after him!" Since there were people from all over the known world, they perceived Jesus to be a real threat to them.

"The next day as they were leaving Bethany...". Jesus and the disciples left Jerusalem on that Saturday (the Triumphal Entry) and traveled back to Bethany. The next day would have been Sunday when they arrived back in Jerusalem and Jesus cursed the fig tree.

Jesus was very indignant when he overturned the tables of the moneychangers in the temple. He did the same thing at the beginning of His mission. Since Jesus lived a perfect life, His actions tell us that righteous indignation is not a sin.

When Jesus quoted scripture, He was quoting from the law which the chief priests and teachers of the law knew very well. They knew the law. Jesus knew they knew the law. That’s why He quoted it!

The crowd said they had heard in the Law that the Christ must remain forever. This is why they were confused when Jesus said He must be crucified. The Law in this case means all of the Old Testament writings, not just the first five books of Moses or just the Ten Commandments.

When Jesus say “Father, glorify your name!” a voice spoke from heaven. Some said it thundered, others said an angel had spoken. Why the difference? Could it be that non-believers heard thunder, believers heard an angel? Why would people have thought they heard thunder? Was there a presence of dark clouds?

Are we as believers listening for the voice from heaven? If we are, maybe, just maybe we may hear it!