Yom Kippur (Day of Atonement) is viewed as the holiest day of the year for Israelites.

It is a day of Sabbath rest, and it is the only day a fast is required from sunset on one day to sundown the next day; no food or drink; we are also to set aside other things that connect us to this world and that give comfort to our bodies.
Traditionally, Israelites would not bathe; they would not oil their bodies, no wearing of shoes, and no marital relations. It is a time of genuinely afflicting your soul.
We are called to repent, change our hearts, and return to YAHUAH; it is a time of sincere self-assessment. We are to reach out and make amends to people we need to make amends with; forgive people who seek forgiveness and let old grudges go. The purpose of all this affliction is to get our minds off of ourselves and focus on our spiritual state; the entire day is focused on praying and asking ELOHIM for forgiveness.

Historically, on the "Day of Atonement," the high priest was kept awake during the dark of the night, and he dressed in a white linen garment for the sacrifices of the bull, the ram, and the goat. He would make a sacrifice for himself and Israel. In this book, we will explain the purpose of these sacrifices; what was done with the blood and the two goats.?
We will examine how he was to enter into the inner sanctuary of the temple, the Holy of Holies.
We not only discuss what the Book of Leviticus has to say about this day, but we will examine the Book of Jubilees for those who want to go a bit deeper into the details.
This book will explore the order of Melchizedek and explain who is the King and high priest; also, we will see why animal sacrifices are no longer needed today.

If you want to see where all these dots are connected, read this book.

We encourage you to keep the "Day of Atonement" and discover why it is viewed as the year's Holiest day.