If thou do well, shalt thou not receive? but if ill, shall not sin forthwith be present at the door? but the lust thereof shall be under thee, and thou shalt have dominion over it.

“Every kind of honour and happiness was bestowed upon you, and then was fulfilled that which is written, "My beloved ate and drank, and was enlarged and became fat, and kicked." [Deuteronomy 32:15] Hence flowed emulation and envy, strife and sedition, persecution and disorder, war and captivity. So the worthless rose up against the honoured, those of no reputation against such as were renowned, the foolish against the wise, the young against those advanced in years. For this reason righteousness and peace are now far departed from you, inasmuch as every one abandons the fear of God, and has become blind in His faith, neither walks in the ordinances of His appointment, nor acts a part becoming a Christian, but walks after his own wicked lusts, resuming the practice of an unrighteous and ungodly envy, by which death itself entered into the world. [Wisdom 2:24] For thus it is written: "And it came to pass after certain days, that Cain brought of the fruits of the earth a sacrifice unto God; and Abel also brought of the firstlings of his sheep, and of the fat thereof. And God had respect to Abel and to his offerings, but Cain and his sacrifices He did not regard. And Cain was deeply grieved, and his countenance fell. And God said to Cain, Why are you grieved, and why is your countenance fallen? If you offer rightly, but do not divide rightly, have you not sinned? Be at peace: your offering returns to yourself, and you shall again possess it. And Cain said to Abel his brother, Let us go into the field. And it came to pass, while they were in the field, that Cain rose up against Abel his brother, and slew him." [Genesis 4:3-8] You see, brethren, how envy and jealousy led to the murder of a brother. Through envy, also, our father Jacob fled from the face of Esau his brother [Genesis 27:41-45]. Envy made Joseph be persecuted unto death, and to come into bondage. [Genesis 37:18-28] Envy compelled Moses to flee from the face of Pharaoh king of Egypt, when he heard these words from his fellow-countryman, "Who made you a judge or a ruler over us? Will you kill me, as you killed the Egyptian yesterday?" [Exodus 2:14] On account of envy, Aaron and Miriam had to make their abode without the camp. [Numbers 12:14-15] Envy brought down Dathan and Abiram alive to Hades, through the sedition which they excited against God's servant Moses. [Numbers 16:33] Through envy, David not only underwent the hatred of foreigners, but was also persecuted by Saul king of Israel. [1 Samuel 21:10-15]”

“God wishes to defuse the wild frenzy and remove the anger by means of his words. You see, he observed the stages of Cain's thinking and realized the savagery of his deadly intention; so he intends at this early stage to sedate his thinking and bring repose to his mind by placing his brother subject to him and not undermining his authority. But even despite such great concern and such potent remedies, Cain gained nothing from the experience. Such was the degree of difference in their attitudes and the excess of evil intent.”

“הלא אם תטיב IF THOU MENDEST — Its meaning is as the Targum gives it: “if thou wilt improve thy doings, thou shalt be forgiven”. לפתח חטאת רובץ SIN CROUCHETH AT THE ENTRANCE — Right up to the door of your grave (until your death) your sin will be preserved. ואליך תשוקתו AND UNTO THEE IS ITS LONGING — The longing of sin; it refers to the evil inclination. This is continually longing and desiring to make you sin. ואתה תמשול בו NEVERTHELESS THOU MAYEST RULE OVER IT — If you desire to, you can gain the victory over it (Kiddushin 30b).”

“IS IT NOT THUS, IF THOU MENDEST ‘SE’EITH’. In the opinion of the commentators, this means there is a “lifting” or forgiveness of your sin. And in the opinion of Rabbi Abraham ibn Ezra it means a “lifting” of your face in contrast to [the question G-d asked of Cain]: Why is thy face fallen? For he who is ashamed presses his face downward. Similarly, it is said, And the light of my countenance they cast not down, whereas one who honors him is as if he raises his face upward. This is the sense of the verses: Perhaps he will lift my face; Do not lift the face of the poor. In my opinion the verse means: “If you will mend your ways you will have your rightful superiority in se’eith (dignity) over your brother since you are the firstborn.” And this is the meaning of [G-d’s question to him]: Why art thou wroth? For by virtue of his feeling ashamed before his brother, his face fell, and because of his jealousy of him he killed him, and now the Eternal told him: Why art thou wroth regarding your brother, and why is thy face fallen on account of him? Is it not thus! If thou mendest, you will have superiority in dignity over your brother, and if thou dost not mend, evil will come upon you not only because of him [your brother], for at the door of your house your sin lurks causing you to stumble in all your endeavors. AND UNTO THEE IS ITS LONGING, for your sin longs to cleave to you at all times. Nevertheless thou mayest rule over it if you so desire, for you may mend your ways and remove it from upon you. Thus He taught him [Cain] concerning repentance, that it lies within his power to return anytime he desires and He will forgive him.”

“And Cain talked with Abel,.... Or "said", or "spoke unto" him (l); either what the Lord God said to him in the foregoing verses, as Aben Ezra; or he spoke to him in a kind and friendly manner, and thereby got him to take a walk in the field with him. The Vulgate Latin version adds, "let us go abroad"; and the Septuagint and Samaritan versions, "let us go into the field"; not to fight a duel, which Abel doubtless would have declined, had that been declared, but to have some friendly conversation; and there being a large pause here in the Hebrew text, the Jerusalem Targum gives us an account of what passed between them when in the field;"Cain said to Abel his brother, there is no judgment, nor Judge, nor will a good reward be given to the righteous; nor will vengeance be taken of the wicked; neither is the world created in mercy nor governed in mercy; otherwise, why is thine offering received with good will, and mine not?''Abel answered and said to Cain,"there is a judgment,'' &c.and so goes on to assert everything Cain denied, and to give a reason why the offering of the one was accepted, and the other rejected: and to the same purpose the Targum of Jonathan: and it came to pass, when they were in the field; alone and at a distance from their parents, or from any town or city, if any were now built, as some think there were, and out of the sight of any person that might come and interpose and rescue: about a mile from Damascus, in a valley, yet on the side of a hill, are now shown the place, or the house on it, where Cain slew Abel (m); and so Mr. Maundrel (n) speaks of a high hill near Damascus, reported to be the same they offered their sacrifice on, and Cain slew his brother, and also of another hill at some distance from Damascus, and an ancient structure on it, supposed to be the tomb of Abel: that Cain rose up against Abel his brother, and slew him; in a furious manner assaulted him, without any just provocation, and took away his life, by some instrument or other, perhaps that was used in husbandry, which might be in the field where they were. The Targum of Jonathan is,"he fixed a stone in his forehead, and slew him;''and so the Jews say (o) elsewhere: our poet (p) says, he smote him in the breast with a stone, into the midriff or diaphragm: it must be by some means or other, by which his blood was shed; but it is not material to inquire what the instrument was, as Aben Ezra observes; since though there might be swords, yet there were stones and clubs enough, as he takes notice; and there must be even instruments for agriculture, one of which might be taken up, as being at hand, with which the execution might be made. The Jewish writers (q) say Abel was an hundred years old when he was slain; and some of them (r) make Abel to be the first aggressor: they say, that Abel rose up against him, and threw him to the ground, and afterwards Cain rose up and slew him; however this was not likely the case. (l) "et dixit", Pagninus, Montanus, Munster, Fagius, Vatablus, Drusis. (m) Lud. Vartoman, Navigat. l. 1. c. 6. (n) Journey from Aleppo, &c. l. 1. p. 131, 133, 134. (o) Pirke Eliezer, c. 21. (p) -----And, as they talk'd, Smote him into the midriff with a stone, That beat out life.----- Milton's Paradise Lost, B. 11. l. 444, &c. (q) Josippon apud Abendana in Miclol. Yophi in loc. (r) Tikkune Zohar, correct. 69. fol. 112. l. 2.”

“If thou doest well - That which is right in the sight of God, shalt thou not be accepted? Does God reject any man who serves him in simplicity and godly sincerity? But if thou doest not well, can wrath and indignation against thy righteous brother save thee from the displeasure under which thou art fallen? On the contrary, have recourse to thy Maker for mercy; לפתח חטאת רבץ lappethach chattath robets, a sin-offering lieth at thy door; an animal proper to be offered as an atonement for sin is now couching at the door of thy fold. The words חטאת chattath, and חטאת chattaah, frequently signify sin; but I have observed more than a hundred places in the Old Testament where they are used for sin-offering, and translated ἁμαρτια by the Septuagint, which is the term the apostle uses, Co2 5:21 : He hath made him to be sin (ἁμαρτιαν, A Sin-Offering) for us, who knew no sin. Cain's fault now was his not bringing a sin-offering when his brother brought one, and his neglect and contempt caused his other offering to be rejected. However, God now graciously informs him that, though he had miscarried, his case was not yet desperate, as the means of faith, from the promise, etc., were in his power, and a victim proper for a sin-offering was lying (רבץ robets, a word used to express the lying down of a quadruped) at the door of his fold. How many sinners perish, not because there is not a Savior able and willing to save them, but because they will not use that which is within their power! Of such how true is that word of our Lord, Ye will not come unto me that ye might have life! Unto thee shall be his desire, etc. - That is, Thou shalt ever have the right of primogeniture, and in all things shall thy brother be subject unto thee. These words are not spoken of sin, as many have understood them, but of Abel's submission to Cain as his superior, and the words are spoken to remove Cain's envy.”

“Over it. This is a clear proof of free-will. To destroy its force, Protestants translate over him, as if Cain should still retain his privilege of the first-born, notwithstanding all his wickedness, and should rule over Abel, who would willingly submit, “unto thee his desire,” &c. But God had made no mention of Abel. The whole discourse is about doing well or ill; and Cain is encouraged to avoid the stings of conscience, by altering his conduct, as it was in his power, how strongly soever his passions might solicit him to evil. (Haydock) — The Hebrew is understood by Onkelos, and the Targum of Jerusalem, in the sense of the Vulgate. The latter reads, “If thou correct thy proceedings in this life, thou wilt receive pardon in the next world. But if thou do not penance for thy sin, it shall remain till the day of the great judgment, and it shall stay, lying at the door of thy heart. But I have given thee power to govern thy concupiscence: thou shalt sway it, either to embrace good or evil.” Calmet shews that the Hebrew perfectly admits of this sense. St. Augustine will not allow of the turn which the Manichees gave it. “Thou shalt have dominion over ( illius. ) What? thy brother! ( absit ) by no means: over what then, but sin? (City of God xv. 7.) Protestants formerly abandoned the translation of 1579, (which they have again resumed) and translated better, “unto thee shall be the desire thereof, and thou shalt rule over it,” which R. Abenezra explains also of sin. To which of these editions, all given by royal authority, will Protestants adhere? Luther wrote a book against free-will, and Calvin would not admit the very name. But we, with all antiquity, must cry out with St. Jerome, contra Jov. 2: “God made us with free-will, neither are we drawn by necessity to virtue or vice; else where there is necessity, there is neither damnation nor reward.” (Worthington; Haydock)”

“The lifting up of the countenance, or joy, is pointed to in the text V. understands it of being re- warded : " Reel pies." Sept. If thou offer rightly, and divide not rightly, thou sinnest" This supposes that Cain withheld a portion of the offering. The text is the cross of critics. Chal. "If thou do thy works wetl, will it not be pardoned? and if thou do not, is not thy sin reserved to the day of judgment, when vengeance will be taken if thou be not converted; but if thou be converted, pardon will be granted." Syr. "Behold, if thou do well, thou wilt receive recompense; but unless thou do well, siu lleth at thy gate: thou wilt turn towards it, and it shall rule over thee." Ar. paraphrases: "If thou do well, wilt thou not be rewarded ? but if thou do not well, sin is lying in wait whithersoever thou goest, but its control belongeth to thee, and tbou shalt rule over it by free choice."”

“If thou doest well, shalt thou not be accepted?--A better rendering is, "Shalt thou not have the excellency"? which is the true sense of the words referring to the high privileges and authority belonging to the first-born in patriarchal times. sin lieth at the door--sin, that is, a sin offering--a common meaning of the word in Scripture (as in Hos 4:8; Co2 5:21; Heb 9:28). The purport of the divine rebuke to Cain was this, "Why art thou angry, as if unjustly treated? If thou doest well (that is, wert innocent and sinless) a thank offering would have been accepted as a token of thy dependence as a creature. But as thou doest not well (that is, art a sinner), a sin offering is necessary, by bringing which thou wouldest have met with acceptance and retained the honors of thy birthright." This language implies that previous instructions had been given as to the mode of worship; Abel offered through faith (Heb 11:4). unto thee shall be his desire--The high distinction conferred by priority of birth is described (Gen 27:29); and it was Cain's conviction, that this honor had been withdrawn from him, by the rejection of his sacrifice, and conferred on his younger brother--hence the secret flame of jealousy, which kindled into a settled hatred and fell revenge.”