It is the last day of the High Holy Days and the last day of teshuva (a 40 day period when people repent for sin). The word atonement means "to cover". On the Day of Atonement, the sins of the Jewish nation were covered by the blood of the sacrifice. The procedure is detailed in Leviticus 16. On this day the High Priest entered the Holy of Holies four times and he:
This is the only day in the Bible that required a day of fasting (Leviticus 23: 27,32; Jeremiah 36:6). Jesus fulfilled the Day of Atonement when He went into the heavenly Holy of Holies with his own blood and He fulfilled it with his own blood for the sins of the world. On this day:
The Feast of Trumpets or Rosh HaShanah on Tishri 1 is the Hebrew New Year.