Actually, it is you who is malinformed.
Minimal biblical study - which apparently you have not done - shows that there are direct contradictions in the Biblical commentary on the death penalty.
Genesis 4:11-15 makes it clear that excommunication is the right penalty - equivalent to life in prison.
Genesis 9:6 implies that the death penalty is the correct solution.
So how do we resolve this? 1 Corinthians 5:7 tells us the way. It says to toss out the old laws when they’re contradictory and stand by the words of Jesus.
Then we have Matthew 5:38-39, where Jesus speaks: “Ye have heard that it hath been said, An eye for an eye, and a tooth for a tooth: But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also.”
Jesus tells us that murder should not be met with murder. I think I’ll stick with Jesus on that one - I tend to trust Jesus more than your blasphemy.
Actually there's no contradiction at all. A great event separates Gen 4 and Gen 9, namely the Great Flood. At that point a new dispensation began, some "rules of engagement" were modified (as in allowing the eating the flesh of animals). Because of the depravity of man, God allowed capital punishment under certain circumstances. For instance, it is not acceptable punishment for killing an animal (v.5) but it is in the case of killing a man (v.6).
Your advice to omega4179 is good, more biblical study. So now, go and do likewise!
Have you ever actually read Genesis? Why not start in verse 9? And the LORD said unto Cain, "Where is Abel thy brother?" And he (Cain) said, "I know not: (liar) Am I my brother's keeper?" (liberalism in its base form)
Genesis 4:10 And He said, (This HE already knew what had happened) "What hast thou done? the voice of thy brother's blood crieth unto ME from the ground.
Even in Genesis 'blood' represents life and that life was crying to the LORD.
Genesis 4:11 And now art thou cursed from the earth, which hath opened her mouth to receive thy brother's blood from thy hand;
verse 12 When thou tillest the ground, it shall not henceforth yield unto thee her strength; a fugitive and a vagabond shall thou be in the earth."
13 And Cain said unto the LORD, "My punishment is greater than I can bear.
14 Behold, Thou has driving me out this day from the face of the earth; and from Thy face shall I be hid; and I shall be a fugitive and a vagabond in the earth, and it shall come to pass that every one that findeth me shall slay me."
(interesting isn't it that if there was still only Adam and Eve in the whole of this earth that Cain would be worried about *every one*, not mommy and daddy finding him, so who else was Cain talking about?)
15 And the LORD said unto him, "Therefore whosoever slayeth Cain, (now who else was around to slay him but mommy and daddy if there was only two people upon the earth?) vengeance shall be taken upon him sevenfold." And the LORD set a *mark* upon Cain, lest any finding him should kill him. (Wonder what that 'mark' literally was?)
16 And Cain went out from the presence of the LORD, and dwelt in the land of Nod, on the east of Eden. (Nod means wandering... and or land of the Nomads. Hmmmmm there was already a land of wanders and yet some people claim that Adam and Eve were the first and yet only Cain at this point is the only other recorded being on the earth....
Who is missing in Genesis 5?
The notion regarding contradictions is total and complete donkey droppings as the law of thou shalt not commit premeditated homicide had not yet been given thus Cain could not be held to account for breaking what had not yet been given with the death penalty. Yet he was cursed.