Genesis 4:4-10

ASV(i) 4 And Abel, he also brought of the firstlings of his flock and of the fat thereof. And Jehovah had respect unto Abel and to his offering: 5 but unto Cain and to his offering he had not respect. And Cain was very wroth, and his countenance fell. 6 And Jehovah said unto Cain, Why art thou wroth? and why is thy countenance fallen? 7 If thou doest well, shall it not be lifted up? and if thou doest not well, sin coucheth at the door; and unto thee shall be its desire; but do thou rule over it. 8 And Cain told 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 unto 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 crieth unto me from the ground.