Genesis 37:29-34

29Now Reuben [unaware of what had happened] returned to the pit, and [to his great alarm found that] Joseph was not in the pit; so he tore his clothes [in deep sorrow].

30He rejoined his brothers and said, “The boy is not there; as for me, where shall I go [to hide from my father]?”

31Then they took Joseph’s tunic, slaughtered a male goat and dipped the tunic in the blood;

32and they brought the multicolored tunic to their father, saying, “We have found this; please examine it and decide whether or not it is your son’s tunic.”

33He recognized it and said, “It is my son’s tunic. A wild animal has devoured him; Joseph is without doubt torn in pieces!”

34So Jacob tore his clothes [in grief], put on sackcloth and mourned many days for his son.