The great tribulation is a war of Satan and his armies v the 2 witnesses and believers. God will intervene to stop the great tribulation before everyone dies because of it. AC will still be alive passed this time, but God will have begun his reign. God intervenes or stops the great tribulation with his wrath. Although Satan's armies will gather to fight against God, they will all become bird food. There is no real fighting against God.
"Matthew 24:29 I believe includes the events of Satan and his angels being cast down prior to the trib, even though it does say after the trib.
Joel 2:30-31
30 And I will shew wonders in the heavens and in the earth, blood, and fire, and pillars of smoke.
31 The sun shall be turned into darkness, and the moon into blood, before the great and the terrible day of the LORD come."
We shouldn't pick which is true because they are both true. After the period of great tribulation, the end of Daniel's 7th week, comes the period of God's wrath. Probably the great and terrible day will be the last day of God's wrath.
Verses of great tribulation:
Rev 6:12 "And I beheld when he had opened the sixth seal, and, lo, there was a great earthquake;
Verses of God's wrath:
The rest of Rev chapter 6.
Proof: The signs after the great earthquake are the signs that immediately follow the great tribulation in Matt 24.
Verses of great tribulation:
Rev 7:9 - 8:4 excluding 8:2 which belongs with the next story beginning with Rev 8:6.
Verses of God's wrath:
Rev 8:5
Proof: The multitude in heaven were all killed during the great tribulation. The noises, thunders, lightnings, and earthquake always end God's wrath.
Verses of great tribulation:
When the army of the 6th trumpet removes the daily sacrifice - Rev 11:14
Verses of God's wrath:
Rev 11:15-19
This is the pattern of chapters 6-19 of the Revelation. The great tribulation ends. God's wrath is then poured out.
The "Day of the Lord" refers to many different times, past and present. It was the Day of the Lord when Babylon defeated Egypt in the days of King Nebuchadnezzar. Jer 46:10,13 "10 For this is the day of the Lord God of hosts, a day of vengeance, that he may avenge him of his adversaries: and the sword shall devour, and it shall be satiate and made drunk with their blood: for the Lord God of hosts hath a sacrifice in the north country by the river Euphrates. 13 The word that the Lord spake to Jeremiah the prophet, how Nebuchadrezzar king of Babylon should come and smite the land of Egypt."
In regard to your Hebrews reference: The first shaking of the earth was at Mt Sinai. It will be like that when Jesus returns. Again, notice the lightning, thunder, voices, and earthquake. Ex 19:16,18 "16 And it came to pass on the third day in the morning, that there were thunders and lightnings, and a thick cloud upon the mount, and the voice of the trumpet exceeding loud; so that all the people that was in the camp trembled. 18 And mount Sinai was altogether on a smoke, because the Lord descended upon it in fire: and the smoke thereof ascended as the smoke of a furnace, and the whole mount quaked greatly."