We see the eternal weight of our sin in:
The sacrificial death of God the Son, the sinless Lamb of God (to Christians, who esteem God)
The existence of eternal, conscious judgment by God in Hell (to the unbelieving, whose life is their most prized possession)

Satan sinned, the angels sinned, once, and the King of Heaven judged them, allowing time for them to heap even more judgment on themselves.
God is being patient, not wishing that any perish.
Rejecting Christ is trampling on the sacrificial blood of Christ, counting as worthless the precious death of God the Son. This is the most heinous of sins. Oh to count as worthless the mercy of God in Christ His Son.
Repentance is obedience to God, initial obedience of turning from sin.

Is worldly enjoyment of your life your most prized possession? God made you, and He created the concept of enjoyment. He takes pleasure in what reflects His greatness. Taking pleasure in the creation MORE than the Creator is called idolatry. Your sin against God has ruined God’s pleasure in you. God has these rights, since He is God, the Creator, the Most High – God will judge every man. God is perfect. If found guilty of even one sin against God, the perfect and eternal God must judge us with a perfectly just and eternal punishment. There is ONE man whose life and character HAVE PERFECTLY pleased God. The decisions we’ve made have consequences. These consequences are God’s perfectly just and eternal judgment of us, who have chosen to violate our conscience by living for temporary pleasures, RATHER than recognizing God in our life. God does not WANT to punish sinners. Jesus Christ gave up His rights as the Son of God and laid down His life to pay the penalty for the decisions YOU AND I have made. This is the greatest way we can understand the perfection of God – that our rebellion as humans was so heinous..