where does it say that they could? There was a law given at that time.
Do you know what it said?
Read Genesis 4: 15
15
And the Lord said to him, “Therefore, whoever kills Cain, vengeance shall be taken on him sevenfold.” And the Lord set a mark on Cain, lest anyone finding him should kill him.
This same law was repeated by Lamech, who killed a man, it seems he said to his wives.
23 Then Lamech said to his wives:
“Adah and Zillah, hear my voice;
Wives of Lamech, listen to my speech!
For I have killed a man for wounding me,
Even a young man for hurting me.
24 If Cain shall be avenged sevenfold,
Then Lamech seventy-sevenfold.”
Where did he get that idea about avenged sevenfold? it was a law of the land, was it not?
If you read, there are many things we know from these chapters that men were doing to show the depravity of sin in men.
- Not all were " walking with God
- they were marrying and giving in marriage as Jesus said they were noticed the more than one wife
- they were still killing each other
- they were wicked, and we know it had to do with perversion and "the thoughts of his heart was only evil "Gen 6:5
Jesus said
Matt 24:37-39
37 But
as the days of Noah were, so also will the coming of the Son of Man be.
38 For as in the
days before the flood, they
were eating and drinking, marrying and giving in marriage, until the day that Noah entered the ark, 39 and did not know until the flood came and took them all away, so also will the coming of the Son of Man be.
The sin of men and evil in his heart. They did not walk with GOD. They were offering things to God He rejected; they murdered and killed and did not show grace or mercy. That is all in Genesis chapter 4 to 6