Yom Kippur is an important Jewish holiday in which God commands every Jew to participate but is largely forgotten by Christians. After the ten days following Rosh Hashanah in which the Jews are to settle their differences and repent from sin, the Jews spend 24 hours in prayer. Formerly, the High Priest entered the Holy of Holies to offer a sacrifice and intercede for Israel, however since Jesus, the Lamb of God who takes away the sin of the world, was slain for our sins, the temple sacrifice is no longer necessary. Therefore, God allowed the temple to be destroyed after Jesus death and resurrection, making further sacrifice impossible. On Yom Kippur, the books opened on Rosh Hosanna are sealed, yet Jews have no assurance that their deeds are adequate because they cannot be sure the sacrifice was without blemish. We can be sure of our salvation because Jesus died for our sins and He is without sin. We are not justified by works and cannot walk in sin and atone for it in a few days of repentance. Since the destruction of the temple, the priests have watered down the importance of the sacrifice, but the Bible says there is no remission of sins without the shedding of blood. Many churches today have watered down the Gospel and pretend going to church is adequate to save you. Many no longer ask for repentance and dedication to Christ.