“And the temple sanctuary of God in heaven was opened, and the ark of his covenant was seen in his temple sanctuary. And there were flashes of lightning and voices and thunders and an earthquake and a great hail”

(Revelation 11:19)

This famous date of Tishri 10th appears in the Bible, several times, in an encrypted or symbolic way, in direct and indirect relationship with the prophetic descriptions of the Great Tribulation (The month of Tishri is the seventh month of the Hebrew lunisolar calendar, between the months of September/October) (Names of months of the Hebrew Calendar):

  1. Then the glory of the God of Israel rose from where it had rested above the cherubs and moved to the threshold of the doorway of the house, and he began calling out to the man who was clothed in linen, at whose waist was the secretary’s inkhorn” (Ezekiel 9:3): Ezekiel Chapter 9 is the prophetic description of the Judgment of humankind and the Great Tribulation. The glory of God "from where it had rested above the cherubs", is clearly the description of the two "cherubs" at the top of the Ark of the Covenant VISIBLE only TISHRI 10TH, in the Most Holy of the Sanctuary of the Temple (Exodus 30:10 “once a year” in the Most Holy).
  2. In the 25th year of our exile, at the beginning of the year, on the tenth day of the month, (…) By means of visions from God, he brought me to the land of Israel and set me down on a very high mountain, on which there was a structure like a city to the south” (Ezekiel 40:1a,2): The prophet Ezekiel has a vision of the earthly administration of the Kingdom of God, after the 7 months of purification immediately following the Great Tribulation, Nisan 10th (Ezekiel 39: 12-16 ; 40:1a “at the beginning of the year (Nisan), on the tenth day (10th) of the month”). If we add the intercalary month Veadar, in accordance with metonic cycle, we have exactly the date of TISHRI 10th. The prophetic information about the 7 months, in Ezekiel 39: 12-16 shows that the Great Tribulation will happen in a lunisolar year of 13 months.
  3. Everyone who is left remaining out of all the nations that come against Jerusalem will go up from year to year to bow down to the King, Jehovah of armies, and to celebrate the Festival of Booths” (Zechariah 14:16): The general context of Zechariah chapter 14 is the prophetic description of the Great Tribulation. The verse 16 of the same chapter shows that "who is left remaining out of all the nations”, is clearly described those who will survive through the Great Tribulation. After the Great Tribulation, they will have to celebrate the prophetic fulfillment of the Festival of Booths, in Tishri 15th. It is indirect information presenting the Great Tribulation as the prophetic fulfillment of the Atonement Day, the TISHRI 10th. This prophecy in Zechariah 14 also gives valuable information on the exact length of the Great Tribulation, since Tishri 10th (Day of Judgment) until Tishri 14th, followed by the Festival of Booths, the Tishri 15th.
  4. But the nations became wrathful, and your own wrath came, and the appointed time came for the dead to be judged and to reward your slaves the prophets and the holy ones and those fearing your name, the small and the great, and to bring to ruin those ruining the earth.” 19 And the temple sanctuary of God in heaven was opened, and the ark of his covenant was seen in his temple sanctuary. And there were flashes of lightning and voices and thunders and an earthquake and a great hail” (Revelation 11:18,19): Revelation 11:19 is really the keystone of the Revelation given by God, through Jesus Christ (1 Corinthians 2:16). This Revelation of God is the key to the understanding of all, the book of Revelation, but also of the other biblical prophecies (Ezekiel, Daniel, Zechariah, Revelation),  in which you can read indirectly the allusion of this famous date : TISHRI 10th.  
  5. “Do not be afraid of the things you are about to suffer. Look! The Devil will keep on throwing some of you into prison so that you may be fully put to the test, and you will have tribulation for ten days. Prove yourself faithful even to death, and I will give you the crown of life” (Revelation 2:10): The mention of the symbolical 10 days of tribulation, after which the disciples of Christ have their reward of everlasting life, seems to evoke the 10 days of Tishri, mentioned later in Revelation 11:19. In Tishri 10th, all of the 144,000 and the Great Crowd will be permanently sealed for everlasting life, in the Heavens for the group of 144000, and on Earth for the Great Crowd (Revelation 7).
  6. We have this hope as an anchor for the soul, both sure and firm, and it enters in within the curtain” (Hebrews 6:19 compared with Leviticus 16:2 “inside the curtain”, that means in the Most Holy part of the Sanctuary): The entrance  “in within the curtain", giving access to the Most Holy (symbol of the Presence of God), once a year, Tishri 10th, prophetically represents the heavenly resurrection (as definitively sealed group) of the 144,000. This heavenly resurrection will give access to God, whose presence is represented by the Ark of the Covenant behind the curtain of the Most Holy (read Hebrews 9) (which can be considered to be sixth biblical evidence)).