Hmm thats a bit harsh it wasnt Cain was no good its just his offering was no good. Recall God was displeased but did give Cain some advice, which he took the wrong way, but even after that God had mercy on him. His dad Adam could have avenged abels death.
In another translation Said:
1John3:12 We must not be like Cain; he
belonged to the Evil One and
murdered his own brother Abel. Why did Cain murder him? Because
the things he himself did were wrong, and the things his brother did were right
Note:
The first murder victim was Abel , Cain belonged to the devil ( tares Mat13:38-39) , Abel belonged to God / born of God John1:13 ; wheat Mat13:38-39 , Isa63:16 ;”
The things” indicate all Cain deeds ----àwere wrong = all the deed of the devil were wrong = there is no truth in him ; but Abel in the opposite.
8:44 You are the children of
your father, the Devil, and you want to follow your father's desires. From
the very beginning he was a murderer and has never been on the side of truth, because
there is no truth in him. When he tells a lie, he is only doing what is natural to him, because
he is a liar and the father of all lies
Note:
“
your father, the Devil” = devil/Satan ,”
the very beginning he was a murderer” the account of the first murder was In the case of Abel ; “
there is no truth in him”= devil deeds , “
he is a liar and the father of all lies” = the account of the first lie was in Eden.
Associate the note of two verses above , the conclusion ? -----à spirit being dwelled in Cain was the devil himself.
which he took the wrong way, but even after that God had mercy on him.
Gen4:14 You are driving me off the land and away from your presence. I will be a homeless wanderer on the earth, and anyone who finds me
will kill me."
4:15 But the LORD answered, "No. If anyone kills you, seven lives will be taken in revenge." So the LORD
put a mark on Cain to warn anyone who met him not to kill him
God did not give mercy to the spirit dwelled in Cain /should never save him for eternity , but gave mercy for not to be extinct , there surely were many of Cain descendants/vessels unto dishonor Rom9:21 for God’s purposes ( there shall be like sand of the sea in the Judgment day which are possessed by the devils Rev20:8 , How shall the devils being freed if everyone surely God’s children /vessels of mercy ? or what is the reason God sets them free ? for deceiving those such sand of the sea ? ).