Lewis Williams preaches on the story of Cain and Abel, emphasizing the importance of meeting God's conditions for acceptance. He highlights the need for a genuine confession of sin and a true acknowledgment of one's need for the cleansing blood of Jesus. Williams warns against a bloodless, thank-offering type of religion, urging believers to bring a broken, bleeding sacrifice that speaks of personal need and faith in God's promise. He challenges listeners to examine their hearts, confess their sins, and seek sanctification to avoid the destructive consequences of harboring anger and sin.