Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[17] And thus did Jacob make a judgment of this vision, and that a shrewd one also. But these interpretations caused very great grief to Joseph's brethren; and they were affected to him hereupon as if he were a certain stranger, that was to those good things which were signified by the dreams and not as one that was a brother, with whom it was probable they should be joint-partakers; and as they had been partners in the same parentage, so should they be of the same happiness. They also resolved to kill the lad; and having fully ratified that intention of theirs, as soon as their collection of the fruits was over, they went to Shechem, which is a country good for feeding of cattle, and for pasturage; there they fed their flocks, without acquainting their father with their removal thither; whereupon he had melancholy suspicions about them, as being ignorant of his sons' condition, and receiving no messenger from the flocks that could inform him of the true state they were in; so, because he was in great fear about them, he sent Joseph to the flocks, to learn the circumstances his brethren were in, and to bring him word how they did.