The Day of Atonement is the fifth of God’s annual Holy Days (Leviticus 23:26-32 Leviticus 23:26-32  And the LORD spoke to Moses, saying,
 Also on the tenth day of this seventh month there shall be a day of atonement: it shall be an holy convocation to you; and you shall afflict your souls, and offer an offering made by fire to the LORD.
 And you shall do no work in that same day: for it is a day of atonement, to make an atonement for you before the LORD your God.
 For whatever soul it be that shall not be afflicted in that same day, he shall be cut off from among his people.
 And whatever soul it be that does any work in that same day, the same soul will I destroy from among his people.
 You shall do no manner of work: it shall be a statute for ever throughout your generations in all your dwellings.
 It shall be to you a sabbath of rest, and you shall afflict your souls: in the ninth day of the month at even, from even to even, shall you celebrate your sabbath.
American King James Version×), following shortly after the Feast of Trumpets. Observed by fasting (verse 27; compare Isaiah 58:3 Isaiah 58:3Why have we fasted, say they, and you see not? why have we afflicted our soul, and you take no knowledge? Behold, in the day of your fast you find pleasure, and exact all your labors.
American King James Version×), which means not eating or drinking (Esther 4:16 Esther 4:16Go, gather together all the Jews that are present in Shushan, and fast you for me, and neither eat nor drink three days, night or day: I also and my maidens will fast likewise; and so will I go in to the king, which is not according to the law: and if I perish, I perish.
American King James Version×), this day portrays the human race finally becoming at one with God.
At the return of Jesus Christ, Satan the devil, who now leads all of mankind astray (Ephesians 2:2 Ephesians 2:2Wherein in time past you walked according to the course of this world, according to the prince of the power of the air, the spirit that now works in the children of disobedience:
American King James Version×; Revelation 12:9 Revelation 12:9And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceives the whole world: he was cast out into the earth, and his angels were cast out with him.
American King James Version×), will be bound (Revelation 20:1-3 Revelation 20:1-3  And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand.  And he laid hold on the dragon, that old serpent, which is the Devil, and Satan, and bound him a thousand years,  And cast him into the bottomless pit, and shut him up, and set a seal on him, that he should deceive the nations no more, till the thousand years should be fulfilled: and after that he must be loosed a little season.
American King James Version×) so all humans of all nations can be reconciled to God.
In the New Testament Luke referred to this Holy Day as "the fast" in Acts 27:9 Acts 27:9Now when much time was spent, and when sailing was now dangerous, because the fast was now already past, Paul admonished them,
American King James Version×.
When the meaning of the Day of Atonement is fulfilled in the future, it will set the stage for the sixth festival of God, the Feast of Tabernacles.
For more information, please read our booklet God's Holy Day Plan: The Promise of Hope For All Mankind.