How does the story of Cain and Abel illustrate God's sovereignty?

In the account of Cain and Abel, God's sovereign choice to accept Abel's offering over Cain's reveals His divine authority over worship. This illustrates that God is not impressed by human effort or merit, but by faith and obedience to His commands. Abel’s offering, which involved the shedding of blood, aligns with God's plan for salvation through Christ, while Cain’s effort represents humanism. This narrative underscores God's ability to elect whom He will, demonstrating that His purposes cannot be thwarted, a core tenet of sovereign grace theology.