The first murder was because of the envy of a brother who would not obey God.
Gen 4:8 And Cain talked with Abel his brother: and it came to pass, when they were in the field, that Cain rose up against Abel his brother, and slew him.
Gen 4:9 And the LORD said unto Cain, Where is Abel thy brother? And he said, I know not: Am I my brother's keeper?
Gen 4:10 And he said, What hast thou done? the voice of thy brother's blood crieth unto me from the ground.
Abel was righteous because he obeyed the commands of God by faith. Cain was the son of disobedience, the son after the sinful flesh nature from his fallen parents. The son of faith and the promises of God will find a natural enemy in the son's of unrighteous flesh and rebellion. Looking forward we see two sons: Ishmael, born of the flesh and Isaac born of the promise of God. The flesh man wars against the child of promise.
Gal 4:28 Now we, brethren, as Isaac was, are the children of promise.
Gal 4:29 But as then he that was born after the flesh persecuted him that was born after the Spirit, even so it is now.
Gal 4:30 Nevertheless what saith the scripture? Cast out the bondwoman and her son: for the son of the bondwoman shall not be heir with the son of the freewoman.
Gal 4:31 So then, brethren, we are not children of the bondwoman, but of the free.
Gal 5:1 Stand fast therefore in the liberty wherewith Christ hath made us free, and be not entangled again with the yoke of bondage.
In Christ, no matter who our parents were, we are the children of promise, the children of Almighty God. As a son or daughter of God we have brothers and sisters of the family of God to care for. Jesus defined to us who our family and brothers are.
Mat 12:47 Then one said unto him, Behold, thy mother and thy brethren stand without, desiring to speak with thee.
Mat 12:48 But he answered and said unto him that told him, Who is my mother? and who are my brethren?
Mat 12:49 And he stretched forth his hand toward his disciples, and said, Behold my mother and my brethren!
Mat 12:50 For whosoever shall do the will of my Father which is in heaven, the same is my brother, and sister, and mother.
Gen 11:31 And Terah took Abram his son, and Lot the son of Haran his son's son, and Sarai his daughter in law, his son Abram's wife; and they went forth with them from Ur of the Chaldees, to go into the land of Canaan; and they came unto Haran, and dwelt there.
Gen 11:32 And the days of Terah were two hundred and five years: and Terah died in Haran.
Gen 12:1 Now the LORD had said unto Abram, Get thee out of thy country, and from thy kindred, and from thy father's house, unto a land that I will show thee:
Gen 12:2 And I will make of thee a great nation, and I will bless thee, and make thy name great; and thou shalt be a blessing:
Gen 12:3 And I will bless them that bless thee, and curse him that curseth thee: and in thee shall all families of the earth be blessed.
Saving righteous Lot
Gen 14:14 And when Abram heard that his brother was taken captive, he armed his trained servants, born in his own house, three hundred and eighteen, and pursued them unto Dan.
Actually Lot was his nephew, but was regarded as a spiritual brother.
Gen 14:15 And he divided himself against them, he and his servants, by night, and smote them, and pursued them unto Hobah, which is on the left hand of Damascus.
Gen 14:16 And he brought back all the goods, and also brought again his brother Lot, and his goods, and the women also, and the people.
The king of Sodom, is the king of unrighteousness, a type of the devil.
Gen 14:17 And the king of Sodom went out to meet him after his return from the slaughter of Chedorlaomer, and of the kings that were with him, at the valley of Shaveh, which is the king's dale.
Melchizadek was a righteous king, referred to as a king and high priest, the type of Christ, with no known beginning or end.
Gen 14:18 And Melchizedek king of Salem brought forth bread and wine: and he was the priest of the most high God.
Bread and wine, symbols of the New Covenant in Jesus.
Mat 26:26 And as they were eating, Jesus took bread, and blessed it, and brake it, and gave it to the disciples, and said, Take, eat; this is my body.
Mat 26:27 And he took the cup, and gave thanks, and gave it to them, saying, Drink ye all of it;
Mat 26:28 For this is my blood of the new testament, which is shed for many for the remission of sins.
Gen 14:19 And he blessed him, and said, Blessed be Abram of the most high God, possessor of heaven and earth:
Gen 14:20 And blessed be the most high God, which hath delivered thine enemies into thy hand. And he gave him tithes of all.
Abraham paid tithes to Melchizadek who was greater than Abraham. A higher priest then the priests of Levi and the law. He blessed Abraham; the higher in spiritual authority blesses the lesser. Melchizadek is a type of Christ who is the giver of salvation through faith, not the works of the law.
Heb 7:5 And verily they that are of the sons of Levi, who receive the office of the priesthood, have a commandment to take tithes of the people according to the law, that is, of their brethren, though they come out of the loins of Abraham:
Heb 7:6 But he whose descent is not counted from them received tithes of Abraham, and blessed him that had the promises.
Heb 7:7 And without all contradiction the less is blessed of the better.
The king of Sodom will give things for souls
Gen 14:21 And the king of Sodom said unto Abram, Give me the persons, and take the goods to thyself.
Gen 14:22 And Abram said to the king of Sodom, I have lift up mine hand unto the LORD, the most high God, the possessor of heaven and earth,
Gen 14:23 That I will not take from a thread even to a shoelatchet, and that I will not take any thing that is thine, lest thou shouldest say, I have made Abram rich:
Gen 14:24 Save only that which the young men have eaten, and the portion of the men which went with me, Aner, Eshcol, and Mamre; let them take their portion.
Abram wisely refuses anything from the type of the devil. All good that he receives comes from the promises of Almighty God, he would not personally receive from the King of Sodom.
Gen 15:1 After these things the word of the LORD came unto Abram in a vision, saying, Fear not, Abram: I am thy shield, and thy exceeding great reward.
Almighty God is Abram's shield, protector and great reward.
Gen 15:2 And Abram said, Lord GOD, what wilt thou give me, seeing I go childless, and the steward of my house is this Eliezer of Damascus?
Gen 15:3 And Abram said, Behold, to me thou hast given no seed: and, lo, one born in my house is mine heir.
Gen 15:4 And, behold, the word of the LORD came unto him, saying, This shall not be thine heir; but he that shall come forth out of thine own bowels shall be thine heir.
Abram was old and had considered Eliazer his steward as his son. Our efforts must wait until God has his way. Your son would come from your union with Sarai, though impossible naturally; God is the God that makes all things possible. An heir would be born of a hundred year old father.
Gen 15:5 And he brought him forth abroad, and said, Look now toward heaven, and tell the stars, if thou be able to number them: and he said unto him, So shall thy seed be.
In the vision God shows Abraham the covenant he has made with him. You will have a spiritual seed as the stars; great in number. All spiritual descendants by faith in Jesus, the seed of Abraham, will be as the stars in number
Gen 15:6 And he believed in the LORD; and he counted it to him for righteousness.
Rom 4:5 But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness.
By works of the law, no man is justified. We are justified by faith. A faithful man will do what God requires of him. James points to obedient work with faith.
James 2:20 But wilt thou know, O vain man, that faith without works is dead?
James 2:21 Was not Abraham our father justified by works, when he had offered Isaac his son upon the altar?
James 2:22 Seest thou how faith wrought with his works, and by works was faith made perfect?
James 2:23 And the scripture was fulfilled which saith, Abraham believed God, and it was imputed unto him for righteousness: and he was called the Friend of God.
James 2:24 Ye see then how that by works a man is justified, and not by faith only.
Eph 2:8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
Eph 2:9 Not of works, lest any man should boast.
Eph 2:10 For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them.
Abraham's faith was counted as righteousness. Who is your brother? Those of faith in Christ Jesus are your family. We obey God as we live our lives through faith in His Son. Cain was disobedient and rebellious. Brothers and sisters of faith are obedient to the will of God. We are to love God and one another, for we are saved by grace unto good works. We are to love and support one another as children of the Most High God.