Recorded sermon from Queanbeyan Presbyterian Church on Genesis 4:1–16, exploring how sin takes root and spreads beyond the individual, as Cain's anger and resentment turn into violence against his brother and reveal the way unchecked sin seeks mastery, damages our relationships, and drives us further from the presence of God. Genesis exposes both the seriousness of injustice and the mercy of God, who warns Cain, judges his evil, restrains the spread of violence, and hears the cry of Abel's blood, ultimately pointing to Jesus, whose blood speaks a better word than Abel's by bearing God's judgment while offering mercy and forgiveness to both those who have been wronged and those who are guilty, bringing sinners home to God.