Berean Study Bible
“Not so!” replied the LORD. “If anyone slays Cain, then Cain will be avenged sevenfold.” And the LORD placed a mark on Cain, so that no one who found him would kill him.

King James Bible
And the LORD said unto him, Therefore whosoever slayeth Cain, vengeance shall be taken on him sevenfold. And the LORD set a mark upon Cain, lest any finding him should kill him.

American Standard Version
And Jehovah said unto him, Therefore whosoever slayeth Cain, vengeance shall be taken on him sevenfold. And Jehovah appointed a sign for Cain, lest any finding him should smite him.

Darby Bible Translation
And Jehovah said to him, Therefore, whoever slayeth Cain, it shall be revenged sevenfold. And Jehovah set a mark on Cain, lest any finding him should smite him.

Douay-Rheims Bible
And the Lord said to him: No, it shall not be so: but whosoever shall kill Cain, shall be punished sevenfold. And the Lord set a mark upon Cain, that whosoever found him should not kill him.

English Revised Version
And the LORD said unto him, Therefore whosoever slayeth Cain, vengeance shall be taken on him sevenfold. And the LORD appointed a sign for Cain, lest any finding him should smite him.

Young's Literal Translation
And Jehovah saith to him, 'Therefore -- of any slayer of Cain sevenfold it is required;' and Jehovah setteth to Cain a token that none finding him doth slay him.