How do we know the way of Cain is wrong?

The way of Cain is characterized by a rejection of God's way of salvation through faith and blood sacrifice. Instead, Cain attempted to worship God through his own efforts, which led to his downfall. The New Testament refers to Cain as being 'of that wicked one,' emphasizing that his way is fundamentally opposed to God's plan. The apostle Jude warns against this way, highlighting the grievous consequences of such rebellion. Understanding Cain's example and its implications helps Christians realize that reliance on self-righteousness leads to spiritual death, while true acceptance comes only through faith in Christ's sacrifice.