Answer:
The triumphal entry of Jesus into Jerusalem, as recorded in the Gospels, took place just days before his crucifixion. While the crowds welcomed him with shouts of "Hosanna," Jesus' triumphal entry was marked by a deep sense of grief and sadness.
There were several reasons for Jesus' grief at this time:
He knew that he was about to suffer and die: Jesus knew that his mission on earth was to die for the sins of humanity, and he knew that his time was drawing near. As he rode into Jerusalem on a donkey, he wept over the city, knowing that its rejection of him would ultimately lead to his death.
He was grieved by the spiritual condition of the people: Jesus was deeply concerned about the spiritual condition of the people of Israel. He saw that they had rejected God's ways and had instead embraced religious traditions and legalism. This grieved him deeply.
He was grieved by the hypocrisy of the religious leaders: Jesus had strong words for the religious leaders of his day, who he saw as hypocrites who were more concerned with their own power and status than with the well-being of the people they were supposed to serve.
He was grieved by the coming destruction of Jerusalem: Jesus prophesied that Jerusalem would be destroyed, and he wept over the city, knowing the suffering and destruction that would come as a result of its rejection of him.
In light of these factors, Jesus' triumphal entry into Jerusalem was less triumphal than it might have appeared on the surface. He was deeply grieved by the spiritual condition of the people and the coming destruction of the city, and he knew that his own suffering and death were imminent.