Leviticus Chapter 23 Verses 26 - 32
"YaHuWaH spoke to Moses, saying, "On the tenth day of this seventh new moon (month) is the day of the kippurim (atonement) it shall be a set-apart gathering for you, and you shall afflict your beings and shall bring an offering made by fire to YaHuWaH. And you do no work on that same day, for it is a day of the kippurim, to make atonement for you before YaHuWaH your God. For any being who is not afflicted on that same day, he shall be cut off from his people. And any being who does any work on that same day, that being I will destroy from the midst of his people. You do no work - a law forever throughout your generations in all your dwellings. It is a Sabbath of rest to you, and you shall afflict your beings. On the ninth day of the new moon (month) at evening, from evening until evening you observe your Sabbath."