Genesis 4:8-9

8Now Cain said to his brother Abel, “Let’s go out to the field.” Samaritan Pentateuch, Septuagint, Vulgate and Syriac; Masoretic Text does not have “Let’s go out to the field.” While they were in the field, Cain attacked his brother Abel and killed him.

9Then the LORD said to Cain, “Where is your brother Abel?” “I don’t know,” he replied. “Am I my brother’s keeper?”