Remember there were many others who died by crucifixion in the first century. It was not the fact that Jesus was painfully crucified that makes Him unique; it was that He was crucified for you, in your place. He died on the cross for you.
Romans 3:23
Isaiah 59:1-2
Matthew 27:46: Jesus was separated from God by your sins.
Share the sins that you committed before being baptized and your feelings of being forgiven at baptism. Ask the person with whom you are studying to share and confess their sins.
Isaiah 53:4-6: Substitute your name.
Watch either The Passion Of The Christ (Gibson) or The Cross (KNN Productions) and afterward discuss Christ's ultimate sacrifice demonstrating God's incredible grace.