Verse 33 is the end of one sermon, a condemnation against the scribes and Pharisees. A new paragraph begins with verse 34 where his attention seems to be turned toward his disciples and immediate listeners. There is also his great lamentation included here, where he weeps for the city of Jerusalem, thus not all here is directed to his disciples.He was telling this to the founders of His church, the Apostles, in a private conversation.
This:
Mat 23:33-39
33 Ye serpents, ye generation of vipers, how can ye escape the damnation of hell?
34 Wherefore, behold, I send unto you prophets, and wise men, and scribes:and some of them ye shall kill and crucify; and some of them shall ye scourge in your synagogues, and persecute them from city to city:
35 That upon you may come all the righteous blood shed upon the earth, from the blood of righteous Abel unto the blood of Zacharias son of Barachias, whom ye slew between the temple and the altar.
36 Verily I say unto you, All these things shall come upon this generation.
37 O Jerusalem, Jerusalem, thou that killest the prophets, and stonest them which are sent unto thee, how often would I have gathered thy children together, even as a hen gathereth her chickens under her wings, and ye would not!
38 Behold, your house is left unto you desolate.
39 For I say unto you, Ye shall not see me henceforth, till ye shall say, Blessed is he that cometh in the name of the Lord.
It is not "then"Then this:
Mat 24:3-4
You did not quote the first two verses which give context. By this time it is possible that a few days have lapsed.
Matthew 24:1 And Jesus went out, and departed from the temple: and his disciples came to him for to shew him the buildings of the temple.
Matthew 24:3 And as he sat upon the mount of Olives, the disciples came unto him privately, saying, Tell us, when shall these things be? and what shall be the sign of thy coming, and of the end of the world?
--He departed and went out of the temple. He traveled in the direction of the mountains. He climbed the mount of Olives, and their sat with his disciples. From the mount they could still see the city of Jerusalem from a distance, from their place near the top of the mount of Olives. It wasn't as if it was immediately in time they were all of a sudden transported in time to the top of a mountain. Give time for travel.
Those Jews of that generation crucified our Lord. They were unsaved Jews who died and went to Hell.3 And as he sat upon the mount of Olives, the disciples came unto him privately, saying, Tell us, when shall these things be? and what shall be the sign of thy coming, and of the end of the world?
4 And Jesus answered and said unto them, Take heed that no man deceive you.
So He was done with the Jews, until the Millenium starts, at His Return.
But to His church, He said "after the tribulation".
The disciples became believers in Christ. In Christ there is no Jew nor Gentile. We are one in Christ. There is no distinction.
At the time of His Coming there will be a living remnant that Paul has described for us in Romans 9-11. That remnant will be saved. Up to that time the Jews must be saved the same way that we are: trusting Christ as their Savior. There is no other way.
Before the Tribulation the saints will be raptured. That is plainly taught in 1Thes.4:16,17 which is far different than 2Thes. chapter one. You cannot reconcile those two chapters can you? The first resurrection is at the rapture before the Tribulation described in 1Thes.4:16,17.
The second resurrection is at the end of the Millennial Kingdom where all the unsaved will appear before Christ in Rev.20:11-15. Do you think we will be there as well?
There are two resurrections separated by a little more than a thousand years according to Rev.20:1-4.