Verses 1–8
GENESIS - CHAPTER FOUR
Verses 1-8:
"Adam knew Eve his wife," in intimate sexual relationship. This does not imply that sexual relationships were forbidden or unknown in the Garden of Eden before the fall. The contrary is true, for the command to "multiply and fill the earth" was God’s mandate before the fall. The statement occurs here to indicate that while Adam and Eve came into being by a direct creation from God, humanity thenceforth is to be produced according to the established law of reproduction.
The firstborn of Adam and Eve was Cain, "acquisition," from kanah "to acquire." Eve’s faith is evident in that she addressed Jehovah as the One from whom she acquired this child, see Psalms 127:3. In the birth of this her first son, Eve saw the guarantee of Jehovah’s faithfulness to fulfill His promise concerning her coming Seed, Genesis 3:15.
"She again bare his brother," literally, she "added to bear." This is a peculiar Hebrew idiom in use as late as in the New Testament, see Luke 20:11. It does not imply that Cain and Abel were twins, although this is not outside the realm of possibility.
"Abel" is from habel, vanity. The name of this second son may be recognition of the judgment of woman in childbearing, Genesis 3:16, and of the sorrows and miseries of humanity because of sin. It may also imply her disappointment in her firstborn son.
Abel’s occupation became that of a shepherd. Cain became a farmer. They likely received instruction and training in these crafts from their father Adam. There is nothing in either occupation which would imply a difference in moral character, nor that one occupation is more favored of God than the other. God called and used men of both occupations in His service: David, the shepherd; and Elisha and Amos, both farmers (1 Kings 19:19-21; Amos 7:14).
"in process of time" is, "at the end of days." This denotes a definite era or period of time. In this case, the starting point of this era is unknown; thus it is impossible to determine just how much time is involved.
In patriarchal times it was customary for the sacrificial offerings to be made by the head of the family. This implies that both Cain and Abel were by this time married and the heads of families. Otherwise, Adam would have been the one to offer these sacrifices.
Both Cain and Abel brought "an offering" unto Jehovah. Cain’s offering consisted of the "fruit of the ground." Abel’s offering was of the firstborn and choice of his flock. The Lord accepted Abel’s offering and rejected Cain’s. The reason for this does not lie in the nature of the offerings themselves. In later years God required that His people offer sacrifice of the "fruit of the ground," Leviticus 2:1-3. It would be inconsistent with His nature to suppose God rejected Cain’s offering merely because it was "of the ground."
The reason Jehovah accepted Abel’s offering while rejecting Cain’s lies in the nature of the ones who made the offering. Abel’s offering was "by faith," Hebrews 11:4, and this is the reason God accepted it. Abel’s faith made his sacrifice "more excellent" than that of Cain. God rejected Cain’s offering because of sin, which dominated Cain’s life, verse 7.
"Cain was very wroth," literally, "it burned with Cain exceedingly." There was no sorrow for sin, no repentance because God had not accepted his sacrifice. There was only anger, wounded pride, resentment toward God and toward his brother, burning and seething in Cain’s heart. Cain’s anger was evident to the eye of Jehovah. In mercy the Lord sought to convict Cain and to bring him to repentance and faith.
"if thou doest well," points to Cain’s spiritual condition in which he made his offering. Had he presented the offering in the spirit of faith, as did Abel, God would have accepted it. The reason for his rejection is that sin was crouching before him as a ravening beast of prey, seeking to dominate his life. Cain could have attained mastery over sin, by following the steps of repentance and faith and submission. Instead, he gave in to sin, because of pride and arrogance in his heart.
The text does not give the content of Cain’s conversation with Abel. In the light of what followed, it may be that Cain discussed the matter of their respective sacrifices and this served only to increase Cain’s anger. It is likely that Cain’s act of violent murder was more than just a spur-of-the moment deed, but rather a deliberate act of pre-meditated murder.