To add onto this, and something I was taught about why the crucifixion was so horrible Rose, it wasn't necessarily even the crucifixion. Yes, dying on the cross was a horrible, terrible way to die. But Jesus suffered much, much more than that. Up until the cross Jesus had been blessed with a direct link to His Father's power. It was through God Almighty that Jesus performed the miracles He did. That's why He was 100% man, 100% God, because He lived each day with free access to God Almighty.
One on the cross, every sin that had ever been committed and would ever be committed was laid upon Him. So much so that the Bible tells us that God the Father had to look away from His beloved Son, because God can not look upon sin. Jesus' sacrifice went beyond the physical and into the spiritual. Jesus was left alone to die on the cross. That's why He was recorded saying, "Father, Father, why have You forsaken Me?" Jesus endured the forsaking of God the Father so that we would never have to.
So Jesus' sacrifice, yes, was physical. The wages of sin is death, the Bible tells us, and He did die for our sins. But when He took our sins upon Him, He was forsaken by his Father in heaven so that we would never have to experience that. Through His salvation, we don't ever have to experience being left alone because Jesus paid that price. It would be the same as our earthly father
allowing us to be murdered. Just because Jesus knew He would rise again doesn't mean His sacrifice was any less real or painful.
Hope that helps too Rose.