Why were there so many chapters written about the last week of Jesus' life?

We have four Gospels in The Bible. These Gospels give us the life of Jesus Christ from four slightly different angles. Because Jesus Christ came to earth to die for mankind's sin on the cross of Calvary this portion of the Gospels is very important. This was Jesus' greatest mission for coming to earth. No other person could appease God for the sins of man except Jesus. He was the God/Man, He was sinless, the Messiah that had been predicted to come for centuries before the event actually happened. He was the only one qualified to die for man and He is the only way to heaven, there is no other way. John 14:6, "I am the way, the truth, and the life. No one comes to the Father except by Me."