TITLE: The Sincerity of Faith and the Tragedy of Unbelief. TEXT: Heb. 11:4; Gen. 4:1-16 THESIS: Despite God’s warning against sin, Cain, a tiller of the ground, murdered his brother, Abel, a shepherd of the sheep, because his brother’s offering was accepted and his was not; he denied responsibility for the crime, and he protested the severity of the punishment, prompting God to protect him. TRUTH: In the broader canonical context, the subject matter of Genesis 4 is the spread of sin from the family to society. The Fall not only affected husband and wife but also brothers and, ultimately, society at large. Cain was a man in rebellion against his brother and against his God; he did not submit to God, nor care for his brother, but destroyed him instead. For what? For the sincerity of his worship. The story is basically about Cain, though it also concerns Abel and the Lord as the principal characters. Cain and Abel p...