Genesis 4:9 in the King James Version
And the LORD said unto Cain, Where is Abel thy brother? And he said, I know not: Am I my brother’s keeper?
Context
8 Cain said to Abel, his brother, “Let’s go into the field.” While they were in the field, Cain rose up against Abel, his brother, and killed him.
9 The LORD said to Cain, “Where is Abel, your brother?” He said, “I don’t know. Am I my brother’s keeper?”
10 The LORD said, “What have you done? The voice of your brother’s blood cries to me from the ground.