The second detail of Jesus' triumphal entry has to do with the actions of the people spreading their cloaks before Jesus. Just like the donkey, the spreading of cloaks harkens back to the practice associated with Israel's history of it's monarachs. 2 Kings 9:13 records the coronation of King Jehu, another King in Israel's history: "Then they hurried and each man took his garment and placed it under him on the bare steps, and blew the trumpet, saying, “Jehu is king!”
1. Allegiance, not admiration. Lk 19:37-38
The people admired Jesus for His miracle working powers, as seen in the parallel account of John 12:18 and in Luke 19:37. As one preacher has noted, these people were "fans", not "followers".
2. Adoration, not appearances. Lk 19:39-40
The Pharisees were wanting the fanatical crowds to silence their shouts of Hosanna for what might had been partly legitimate reasons. Nevertheless, Jesus' could see deep down in their hearts. The Pharisees were not merely concerned about the crowds possibly stirring up unwanted trouble from the Romans. Jesus saw there truest and deepest intent: namely, the Pharisees didn't feel that Jesus the worth the praise, whether ill-conceived by most in the crowd or truly meant by His closest followers. After all, the worshipers were quoting Psalm 118! All we know is that by the end of Luke 19, the Pharisaic and Jewish rulers revealed their true colors. Things were going to quickly unravel and it would be a matter of days until they had their sworn enemy crucified.
As was just mentioned, things were unraveling. The undercurrent of hatred for the Lord Jesus Christ was poised to boil-over.
Jesus’ response: Sorrow & Cleansing. Lk 19:41-46
Here we find Jesus weeping over Jerusalem, parallel in Matthew 23. The sorrow of His heart followed up by what we know to be His second cleansing of the temple (the first recorded near the beginning of His ministry in John 2). Jesus' symbolic cleansing of the temple court was specifically the area where worshipers would enter. It was also the only place where Gentiles were allowed to be (since signs were posted forbidding Gentiles to enter anywhere beyond the outer-court of entry, where Jesus likely did this act). Again, Jesus' activities were in fulfillment of prophetic scripture. Isaiah 56:7 reads for example: "Even those I will bring to My holy mountain And make them joyful in My house of prayer. Their burnt offerings and their sacrifices will be acceptable on My altar; For My house will be called a house of prayer for all the peoples.”