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

[35] When Joseph's brethren had done thus to him, they considered what they should do to escape the suspicions of their father. Now they had taken away from Joseph the coat which he had on when he came to them at the time they let him down into the pit; so they thought proper to tear that coat to pieces, and to dip it into goats' blood, and then to carry it and show it to their father, that he might believe he was destroyed by wild beasts. And when they had so done, they came to the old man, but this not till what had happened to his son had already come to his knowledge. Then they said that they had not seen Joseph, nor knew what mishap had befallen him; but that they had found his coat bloody and torn to pieces, whence they had a suspicion that he had fallen among wild beasts, and so perished, if that was the coat he had on when he came from home. Now Jacob had before some better hopes that his son was only made a captive; but now he laid aside that notion, and supposed that this coat was an evident argument that he was dead, for he well remembered that this was the coat he had on when he sent him to his brethren; so he hereafter lamented the lad as now dead, and as if he had been the father of no more than one, without taking any comfort in the rest; and so he was also affected with his misfortune before he met with Joseph's brethren, when he also conjectured that Joseph was destroyed by wild beasts. He sat down also clothed in sackcloth and in heavy affliction, insomuch that he found no ease when his sons comforted him, neither did his pains remit by length of time.