Genesis 4:10

Cain killed Abel out of jealousy and an anger he refused to master. God had received Abel’s offering and passed over his, and Cain turned his resentment on the brother who had been accepted. John, when he calls us to love one another, names Cain as the warning, whose own works were evil and his brother’s righteous (1 John 3:11–18). James traces the same road from the heart to the grave: “Then when lust hath conceived, it bringeth forth sin: and sin, when it is finished, bringeth forth death” (James 1:15).

The murder also shows how quickly the ruin of Genesis 3 spread. Adam and Eve’s disobedience broke their fellowship with God, and in the very next generation, inside the first family, the break reaches from man and God to man and man. Genesis 4 moves from eating forbidden fruit to shedding a brother’s blood, and by Noah’s day “the earth was filled with violence” (Genesis 6:11).

Abel is also the first righteous man to suffer at the hands of the unrighteous. That pattern runs on through the history of God’s faithful people and reaches its fullest point in the death of Christ.

God asks in order to call Cain to account and to open the way for him to confess. He had come to Adam after the first sin in the same way, asking “Where art thou?” (Genesis 3:9). God sees all things. David says that there is nowhere to flee from his presence and that the night shines as the day to him (Psalm 139:7–12), so a killing in an empty field was done in God’s full sight. The second question, in verse 10, presses harder: “What hast thou done?” The little word mâh, “what”, is here an accusation and a demand for an account, as when a judge lays the evidence before the accused.

Cain answers with a lie. “I know not” uses yâdaʻ, the broad Hebrew verb for knowing, which covers seeing, recognising and caring about, and Cain knows very well where his brother lies. Proverbs says, “He that covereth his sins shall not prosper: but whoso confesseth and forsaketh them shall have mercy” (Proverbs 28:13). Cain chose to cover, and the curse followed where mercy had been within reach.

Scripture’s answer to Cain’s question is yes. “Keeper” comes from shâmar, to guard, protect, watch over and preserve, a verb whose root picture is hedging something about, as with thorns. Cain throws the word back at God to shrug off any duty to watch over Abel, and the shrug comes from the man who has just killed him. God’s reply in the next verse shows that he holds Cain answerable for his brother. The law later commands, “thou shalt love thy neighbour as thyself” (Leviticus 19:18), and when a lawyer asked Jesus who his neighbour was, Jesus told of the Good Samaritan, where the neighbour is anyone in need (Luke 10:29–37).

People ask whether this makes us answerable for everything another person does. The duty is to love: to protect the vulnerable, to seek another’s good and to care what becomes of him. Each person still answers to God for his own choices.

The picture means that a murder God alone witnessed has been heard by God, and that he will answer it. Dâm is the ordinary word for blood, and the law explains why shed blood weighs so much: “the life of the flesh is in the blood” (Leviticus 17:11). Tsâʻaq means to cry out or call for help, the cry of someone in distress. Abel’s own voice has been silenced, so Genesis gives his blood a voice, and its cry for justice rises to God.

The cry goes “unto me”. Murder is in the end a sin against God, because the life taken was made in his image (Genesis 1:27), and the same truth stands behind the word given to Noah: “Whoso sheddeth man’s blood, by man shall his blood be shed: for in the image of God made he man” (Genesis 9:6). James uses the same picture for another wrong, when the wages kept back from the reapers cry out and their cries reach the ears of the Lord (James 5:4). God hears the wronged when every human court has failed them.

The cry comes “from the ground”, ʼădâmâh, the soil. Man was formed from the dust of this ground (Genesis 2:7), and it was cursed for Adam’s sake (Genesis 3:17–19). Now it has taken in a brother’s blood, and it stands as a witness against the killer. The law of Moses says what this does to a land: “for blood it defileth the land: and the land cannot be cleansed of the blood that is shed therein, but by the blood of him that shed it” (Numbers 35:33). Human sin reaches the earth itself, and Paul says that “the whole creation groaneth and travaileth in pain together until now” (Romans 8:22).

Cain’s curse is heavier and more personal than Adam’s. After Adam’s sin the ground was cursed for his sake, so that it bore thorns and thistles and gave its food through sweat and toil. With Cain the man himself is cursed, and the ground will hold back from him in particular. “When thou tillest the ground” uses ʻâbad, to work, serve or till, the word for his whole occupation as a farmer. “Her strength” is kôach, strength or power, and here it means the produce the soil is able to give. The ground that opened its mouth for Abel’s blood now closes its strength to Cain, and the tiller of the ground is turned away by the ground he tills. Farming was how a man lived, so the sentence strikes at his living as well as his home.

The second part of the sentence is “a fugitive and a vagabond shalt thou be in the earth.” The two Hebrew words, nûwaʻ and nûwd, are close in sound and in sense. The first means to waver or move to and fro, and the second means to nod or waver, and so to wander or flee. Together they describe a restless man with nowhere to settle. In a world where family and land were a person’s safety, such a man was an outcast, exposed to every danger.

The same restlessness is threatened to Israel if the nation turns from God: “And among these nations shalt thou find no ease, neither shall the sole of thy foot have rest” (Deuteronomy 28:65). Proverbs says, “The wicked flee when no man pursueth” (Proverbs 28:1). Exile as the wage of rebellion begins with Adam and Eve sent out of Eden (Genesis 3:23–24), continues here, and comes on a whole nation when Judah is carried away to Babylon (2 Kings 25), as the LORD had warned through Jeremiah that he would cast his people out of his presence (Jeremiah 23:39). Scripture also shows the way home. A psalm tells of wanderers in the wilderness who cried to the LORD, and he led them to a city where they could live (Psalm 107:4–7).

The weight of the sentence matches the worth of what Cain destroyed. Abel was made in the image of God, and his blood was innocent. God’s justice is perfect, and here it establishes from the earliest days that human life is sacred and that the taking of it will be answered. Even so, Cain keeps his life, as the following verses show.

Sin still separates people from God, breaks their relationships and brings painful consequences, though direct curses of the kind pronounced in early Genesis are less common in the New Testament era. For everyone who believes, the curse has already fallen on another: “Christ hath redeemed us from the curse of the law, being made a curse for us” (Galatians 3:13).

Cain’s words are all about what will happen to him. He speaks of his burden, his exile and his danger, and Abel’s name is missing from all of it, along with any confession of the wrong done to God. That is the difference between grieving over the consequences of sin and repenting of the sin. David’s prayer of repentance in Psalm 51 turns the other way, toward the God who was offended. There is a bitter irony in Cain’s complaint too, since the man who showed his brother no mercy now laments how little mercy is left for him.

Cain is right about one thing, and it is true of all of us. “The wages of sin is death” (Romans 6:23), and the weight of sin is too great for any sinner to carry. Paul cries, “O wretched man that I am! who shall deliver me from the body of this death?” (Romans 7:24).

God protects Cain in order to keep judgment in his own hands and to stop one killing from being answered by another and another. The curse stands in full, and Cain still loses the ground’s strength and his settled home. What God forbids is that any other person should take Cain’s life. “Slayeth” is again hârag, and “vengeance” comes from nâqam, to avenge, to repay harm for a wrong done. “Sevenfold”, shibʻâthayim, is a dual form meaning seven times, and since seven in Scripture often stands for completeness, the threat is of full and certain retribution. God claims that work as his own in the law, “To me belongeth vengeance, and recompence” (Deuteronomy 32:35), and Paul builds on it: “Dearly beloved, avenge not yourselves, but rather give place unto wrath: for it is written, Vengeance is mine; I will repay, saith the Lord” (Romans 12:19).

This is also mercy. Even a murderer’s life belongs to God, and God is patient with the guilty. “The LORD is merciful and gracious, slow to anger, and plenteous in mercy” (Psalm 103:8), and Peter says that he “is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance” (2 Peter 3:9). The same patience meets human rebellion again in the days before the flood (Genesis 6). In sparing Cain God is patient with the sinner while the sin stays under its curse.

The mark was a sign from God that Cain was under his protection. The word is ʼôwth, a sign or token, the same word used for the rainbow as the token of God’s covenant (Genesis 9:12) and for the signs God did in Egypt. Genesis tells us what the mark was for, “lest any finding him should kill him”, and leaves its form untold. It may have been something visible on his body or some other token people could recognise. It was given to guard his life, and it showed everyone who met him that the LORD himself would answer for Cain’s blood.

Nod is the land of wandering. The name Nôwd comes from the same root as nûwd, the “vagabond” of God’s sentence, so the place where Cain settles carries his sentence in its name. Genesis places it “on the east of Eden” and gives it no other location. The cherubim were set at the east of the garden when Adam and Eve were driven out (Genesis 3:24). Cain goes further in the same direction, and the east comes up again when men settle in Shinar to build Babel (Genesis 11:2). In these early chapters the way east is the way out from the place where God dwelt with man.

Cain left God’s near presence and favour, and God’s hand was still on him. He went out carrying the sign of God’s protection, given a moment before, so the LORD who judged him also kept him alive. God rules and shows mercy even over those who walk away from him, though the road they choose leads away from his face.