The pain must have been excruciating. God, in His love, came to this earth in human form to die at the hands of the very people He created, so that those who would trust in Him and Him alone might have eternal life and unspeakable joy for eternity. Man has a rebellious nature, especially against the things of God. No person has to teach a child to lie. Rather a child has to be taught to do right.
Man is very self-centered.
He is selfish. Each person usually looks at himself as the center of the universe. People traditionally do what is right in their own eyes, not in the eyes of a Holy God. Thus, man needed a Savior. Man needed someone to pay his sin debt.