English Standard Version
Then the LORD said to him, "Not so! If anyone kills Cain, vengeance shall be taken on him sevenfold." And the LORD put a mark on Cain, lest any who found him should attack him.New International Version
But the LORD said to him, "Not so; if anyone kills Cain, he will suffer vengeance seven times over." Then the LORD put a mark on Cain so that no one who found him would kill him.Catholic Public Domain Version
And the Lord said to him: "By no means will it be so; rather, whoever would kill Cain, will be punished sevenfold." And the Lord placed a seal upon Cain, so that anyone who found him would not put him to death