Lives of Scripture

Cain is Adam and Eve's firstborn, a "tiller of the ground" whose younger brother Abel keeps flocks (Genesis 4:1-2). Both bring offerings to the LORD -- Cain from his crops, Abel "of the firstlings of his flock" -- and God accepts Abel's offering but not Cain's (4:3-5); Hebrews 11:4 credits Abel's offering to faith, implying Cain's lacked it. Cain's face falls in anger, and God warns him directly: sin is "crouching at the door," desiring to master him, but he must master it (4:6-7) -- one of Scripture's clearest statements that sin can be resisted, not merely suffered. Cain does not master it. He lures Abel into a field and kills him, the Bible's first murder and first instance of one image-bearer destroying another (4:8). When God asks where Abel is, Cain's answer -- "Am I my brother's keeper?" -- is evasion compounding the crime. God curses the ground under Cain and makes him a restless wanderer, but also marks him for protection, so that no one who finds him will kill him in return (4:9-15) -- judgment tempered by mercy even here. Cain settles east of Eden in the land of Nod, builds a city, and fathers a line that includes Lamech, whose own violence (4:19-24) shows sin compounding across Cain's descendants. The New Testament later cites Cain as a warning example, both of hatred toward a righteous brother (1 John 3:12) and of false, self-serving religion (Jude 1:11).