A scapegoat is a person or animal which takes on the sins of others, or is unfairly blamed for problems. The concept originally comes from Leviticus, in which a goat is designated to be cast into the desert with the sins of the community. Other ancient societies had similar practices. In psychology and sociology, the practice of selecting someone as a scapegoat has led to the concept of scapegoating.
Leviticus 16:8 English Standard Version (ESV)
And Aaron shall cast lots over the two goats, one lot for the Lord and the other lot for Azazel.
