Leviticus

The Day of Atonement (aka: Yom Kippur) - each year, on one single day, the high priest was able to access the Holiest Place (to sprinkle blood on the mercy seat). On this day a priest would place all of the sins of all the Hebrews onto a goat and send him into the wilderness... the scapegoat. (Read about this day in ch. 16)