What can we learn from the example of Cain and Abel?

In comparing Cain and Abel, Hebrews 11:4 highlights that Abel's offering was accepted by God because it was offered in faith, while Cain's was not. This distinction illustrates that mere religious activity is insufficient; our faith must influence how we approach God. Cain's offering lacked the coming faith that acknowledges God's prescribed means of reconciliation. The narrative serves as a caution against approaching God on our own terms rather than in accordance with His revealed truth. Abel's faith points to the necessity of a heart that believes in God's promises, ultimately fulfilled in Christ.