Genesis 4:8

Now Cain said to his brother Abel, 'Let's go out to the field.' And while they were in the field, Cain attacked his brother Abel and killed him.

(New International Version)

Cain told Abel his brother. And it came about when they were in the field, that Cain rose up against Abel his brother and killed him.

(New American Standard Bible)

And 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.

(King James Version)