As Adam's and Eve's first-born son Cain stood in aplace of privileged blessing, but his attitude in his worship revealed a sinful heart. God called Cain to discern and counter sin's attack upon him. Cain rejected the blessings of his birthright and God's word and it resulted not only in his murdering his brother, but also is banishment from God's blessings. Only God's sovereign merciful power can rescue us from our sin. While God is the source of all outward blessings, such blessings by themselves cannot free us from the power and presence of sin. Through His word given to his covenant people, God calls us to discern and counter sins attack on us by attending to the attitude of our hearts in our worship of Him.