Begun at the foot of Mt. Sinai
According to tradition, the first Yom Kippur took place after the Israelites’ exodus from Egypt and arrival at Mount Sinai, where God gave Moses the Ten Commandments. Descending from the mountain, Moses caught his people worshipping a golden calf and shattered the sacred tablets in anger. Because the Israelites atoned for their idolatry, God forgave their sins and offered Moses a second set of tablets.