Today, Saturday 14 September 2013, is the holiest day of the year within Judaism. Yom Kippur (the Day of Atonement). The Jewish focus is on reconciliation with God and on repentance. During his life before the Cross, Jesus observed this annual holy day. Every year that he kept this day, he participated in a picture of what he would eventually achieve – through his sacrifice on the Cross.
We now have Jesus, the living Lamb of God. Therefore, Christians have no requirement to strictly observe this day from the Old Testament – Yom Kippur was a sign of something to come, which has now arrived in the life and work of Jesus.
James Henderson comments on Yom Kippur in Day by Day, in the link below: