Summary of Reasons: Rapture on the Feast of Trumpets / Rosh Hashanah
Summary of reasons why Christians expect to see the rapture happen on the Feast of Trumpets:
1. All the Spring Feasts were fulfilled at Christ's first coming, and on the exact day of the feast. All the Fall Feasts picture the second advent, and the Feast of Trumpets is the first of the fall feasts, picturing the rapture.
The Feast of Trumpets is when the "last trump" of the rapture of 1 Cor 15 is blown.
2. The Feast of Trumpets is known as the Wedding of the Messiah, and the Church is the Bride of Christ, and the rapture is when the Church is caught up to heaven to be wed with Christ.
3. The Feast of Trumpets happens on the "new moon", which is 29.5 days after the last one, meaning it might occur on the 29th or 30th day, nobody knows for sure. "Of that day or hour no man knows" is an expression referring to this feast, and thus, the rapture.
4. "Of that day or hour no man knows, but my Father only" is an expression used by a groom when asked when his wedding will be. He says this because it is his Father that will tell him when his preparations on the bridal chamber are completed and it is time. Again, the wedding pictures the rapture.
5. The "Open Door" of the rapture in Matt 25, and Rev 3, & Rev 4:1 is a symbol of the Feast of Trumpets. [Ezek 46:1] "Thus says the Lord GOD: The gate of the inner court that faces east shall be shut on the six working days; but on the sabbath day it shall be opened and on the day of the new moon it shall be opened.
6. We are told that the new moon and the Feasts of the Lord are a shadow of things to come in Col 2:16,17. Since the Feast of Trumpets is the only Feast of the Lord that falls on a new moon, we should take particular note.
7. There are seven days of awe in between the Feast of Trumpets and the Day of Atonement. These picture the seven years of tribulation. Atonement pictures Satan being defeated and cast away at the end of tribulation. If you add the two day Trumpets feast, and the day of atonement, the 7 days of awe are "ten days of tribulation" which might be referred to in Rev. 2:10.
8. In the Jewish Wedding, a marriage takes place over a period of time known as the "bridal week". During the bridal week, the groom and bride have intercourse in the bridal chamber. At the end of the week, there is a marriage supper. Compare Judges 14, Rev. 19, and Gen. Genesis 29:22-28 This bridal week will be the tribulation week on earth, while the bride of Christ is in heaven.
9. In the Jewish Wedding, the groom comes for his bride "like a thief in the night" to take (size / rapture) her away and into the bridal chamber for the bridal week at his father's house.
10. The Feast of Trumpets is also known as the coronation of the Messiah, when he will start reigning as king, thus the beginning of the "Day of the Lord", which includes the tribulation.
11. It is also time for the bema judgment, or the judgement of the works of the righteous, and judgement must begin at the house of the Lord.
12. [2Cor 11:2] For I am jealous over you with godly jealousy: for I have espoused you to one husband, that I may present you as a chaste virgin to Christ.