Remember, it will not be the "act" of sin God will punish come final judgement. Rather, every soul that rejects His only begotten Son's perfect sacrifice & atonement will be cast away!
Do we really realize the price Christ, the Messiah paid when He endured His Father's wrath? So many want to chalk it up to His physical sufferings. Its so much DEEPER THAN THIS! This was the 1st ever separation He had from His Father... Sin separates us from God.
JESUS BORE OUR SIN! EVERY BIT OF IT! Everything you and I would ever do to break God's heart and His law.
Even as much as I believe, my tiny human mind cannot fully comprehend that magnitude! People say, "religion is complicated. It's dull and boring." Christ didn't come to give you a bunch of hoops to jump through. He came to give you LIFE! HE CAME TO SET US FREE! He came to give us HOPE so that we CAN know the Father and His impeccable LOVE for us, His creation.
Truth is, we sin. "All have sinned and fallen short of the glory of God." How dare we claim to be "good", when there is NONE GOOD BUT JEHOVAH!
I know that's pretty abstruse but that's the simplicity of the Gospel Truth! We need not complicate the only thing that saves a soul from eternal damnation!