Genesis 4:8-10

Darby Translation

⁸ And Cain spoke to Abel his brother, and it came to pass when they were in the field, that Cain rose up against Abel his brother, and slew him.

⁹ And Jehovah said to Cain, Where is Abel thy brother? And he said, I know not: am I my brother's keeper?

¹⁰ And he said, What hast thou done? the voice of thy brother's blood is crying to me from the ground.