Genesis 37:18-21

And they saw him afar off, and before he came near unto them, they conspired against him to slay him. And they said one to another, Behold, this dreamer cometh. Come now therefore, and let us slay him, and cast him into one of the pits, and we will say, An evil beast hath devoured him: and we shall see what will become of his dreams. And Reuben heard it, and delivered him out of their hand, and said, Let us not take his life.