اَلتَّكْوِينُ 4:15

فَقَالَ لَهُ ٱلرَّبُّ: «لِذَلِكَ كُلُّ مَنْ قَتَلَ قَايِينَ فَسَبْعَةَ أَضْعَافٍ يُنْتَقَمُ مِنْهُ». وَجَعَلَ ٱلرَّبُّ لِقَايِينَ عَلَامَةً لِكَيْ لَا يَقْتُلَهُ كُلُّ مَنْ وَجَدَهُ.

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.