The reason why I suggested that this question is basically for Christians or believers in Jesus is because I know that there are many people in the world who don't know Jesus, and the Bible...
ackman1465, I suggest that you research about Jesus in the internet if you truly don't know him.
The death of Jesus in the cross must happen according to the "Plan of Redemption".
Adam was created by God and was meant to be perfect "according to God's image.." But Adam sinned because of his love to Eve. He knew that Eve committed sin against God's law when she was tempted by the serpent to eat the fruit of the forbidden tree... therefore Eve must die as a punishment...but Adam loved her, he cannot lose her so he also ate the fruit.
They both die a "spiritual death" that day...they saw how bare and vulnerable they were without God's power to enfold them. They were driven out from the garden of Eden...which means, they had to work hard in order to live.
The connection between Man and God was cut off...Adam and Eve sinned and their children and all humanity were born carrying with them the sins of the original parents who sinned against God.
But God is Love...so the Plan of Redemption brought Jesus to the scene, the Bible says in John 3:16 "For God so loved the world that He gave His only begotten Son, that whoever believes in Him shall not perish but have everlasting life." Jesus has to shed his blood...the blood that is symbolic to wash off the inherited sin...Jesus blood on the cross is the only "Reconnection" power between Man and God. Jesus is the "Religion"...this word means "to tie again", to "Reconnect".
For me...Jesus' death on the cross is the only power that keeps me away from a "life of hell" on earth, even when we are still alive...this life is full of man's foolishness that emanate from his sinful heart..