And Adam knew Eve his wife; and she conceived, and bare Cain, and said, I have gotten a man from the LORD. Eve was mistaken concerning her first child. She thought this was the child promised by the Lord , but he was not the promised child. He is not the seed that should bruise the serpent's head. Instead of getting the Saviour Eve got a murderer. This shows her ignorance in which she had fallen into because she trusted in Satan for knowledge. And she again bare his brother Abel. And Abel was a keeper of sheep, but Cain was a tiller of the ground. Abel was a type of spiritual man. He was a shepherd. And Abel brought an offing to the Lord. According to the Lord's instructions Abel brought of the firstlings of his flock and of the fat thereof. And the LORD had respect unto Abel and to his offering: Abel understood what the Lord's requirements for man's salvation. Abel had faith in the Lord. Abel was conscious of sin .His sacrifice of the firstlings of his flock was expression of his consciousness of man's sin and his need for the Lord to provide an substitute. Blood was shed to express his consciousness of sin and his faith in Lord for a substitute. Abel's sacrifice was acceptable because he was righteous (1John 3:12). Abel's offering was acceptable because it was offered in faith (Heb 11:4). God has ordained such sacrifice. It gives a picture of the atoning death of Christ. And in process of time it came to pass, that Cain brought of the fruit of the ground an offering unto the LORD But unto Cain and to his offering he had not respect. And Cain was very wroth, and his countenance fell. And the LORD said unto Cain, Why are you wroth? and why is your countenance fallen? If you do well, shall you not be accepted? and if you do not well, sin lies at the door. And unto you shall be its desire, and you must rule over it.www.peoplebible.comThis earthy offering had its roots in ground. It was from the world. It was a sign of disobedience to the Lord.Cain did his own way. Cain did it not according God's instruction. Cain did it not according the way of the Lord. Cain was a type of a natural man of the world. These people attack with insults anything they do not understand. And those things that they knew by instinct, like wild animals, are the very thing that destroys them. How terrible for them. They have followed the way that Cain took (Jude 11,12). Cain's religion was of works. It was based on lies. It had its roots from the liar , Satan. These lies lead to dead end ways that are without God. Abel ate God's Word, and brought out offerings according to the word of God. And the Lord had respect unto Abel and his offering. But Cain ate the lies of Satan and brought up disobedience to God. 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. Cain's religion is a wolf in a sheepskin. He does not eat meat . He thinks that the killing an animal for food is evil. He eats fruits and vegetables , but he kills a man, his brother. This is the story of the natural man . He puts on an outer appearance. His heart is full of evil. Many claimed to eat only fruits and vegetables, but they go around killing people. In disobedience to the God , Cain refused to recognize man's sin. Cain rejected the provision of God. It also rejected God's authority. And the LORD said unto Cain, Where is Abel thy brother? And he said, I know not: Am I my brother's keeper? And He said, What have you done? the voice of thy brother's blood cries unto me from the ground. And now art thou cursed from the earth, which had opened her mouth to receive your brother's blood from thy hand; When you till the ground, it shall not henceforth yield unto thee her strength; a fugitive and a vagabond shall thou be in the earth. God's way of salvation fills man's heart with love. Man's religion fills his heart with hatred. Cain hated his brother and slew him.