Genesis 4:9
King James Version
“And the LORD said unto Cain, Where Abel thy brother? And he said, I know not: I my brother’s keeper?”
Context
6And the LORD said unto Cain, Why art thou wroth? and why is thy countenance fallen?
7If thou doest well, shalt thou not be accepted? and if thou doest not well, sin lieth at the door. And unto thee his desire, and thou shalt rule over him.
8And Cain talked with 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.
9And the LORD said unto Cain, Where Abel thy brother? And he said, I know not: I my brother’s keeper?
10And he said, What hast thou done? the voice of thy brother’s blood crieth unto me from the ground.
11And now thou cursed from the earth, which hath opened her mouth to receive thy brother’s blood from thy hand;
12When thou tillest the ground, it shall not henceforth yield unto thee her strength; a fugitive and a vagabond shalt thou be in the earth.