Holiness in Everyday Life: Laws of Purity, Sacrifice, and Love for Neighbor. The Day of Atonement showed Israel that God makes atonement for His people. But holiness can’t be limited to one annual ritual. Leviticus 17–19 insists that everyday life—meals, business dealings, sex, friendships—is also the arena where God’s presence is honored. Holiness is not a ceremony; it’s a lifestyle.