Yes, that tribulation has been ongoing for 2 millennia. Do you think it stopped at some point since the first century?
Every person born of the second birth are to persevere until their final breath, the end of their life of suffering for Jesus Christ. That has applied to every generation, not just a single generation.
There is no Scripture stating persecution during those last 42 months. To have one's head chopped off is a personal choice. That is their moment of testimony to their submission to God. These are not martyrs like those who are currently beheaded by Muslims in this generation, or any past generation. They are not believers prior to their head being chopped off. The act of chopping off their head makes them a believer, at the point of death.
No one is trying to persevere as a believer during those last 42 months of the 8th kingdom. You are either physically dead or have the mark. There is not a third option, of avoiding death. To avoid the mark is the act of faith in chopping off one's head.
False
From the time the second beast appears Israel,the beast has 42 months.
The saints who are murdered for their testimony of Jesus and for the word of God and who did not worship the beast or it's image or recieve it's mark die within that ,42 months span.
Revelation13
5 And there was given unto him a mouth speaking great things and blasphemies; and power was given unto him to continue forty and two months.
6 And he opened his mouth in blasphemy against God, to blaspheme his name, and his tabernacle, and them that dwell in heaven.
7 And it was given unto him to make war with the saints, and to overcome them: and power was given him over all kindreds, and tongues, and nations.
8 And all that dwell upon the earth shall worship him, whose names are not written in the book of life of the Lamb slain from the foundation of the world.
9 If any man have an ear, let him hear.
10 He that leadeth into captivity shall go into captivity: he that killeth with the sword must be killed with the sword. Here is the patience and the faith of the saints.
These saints are the same saints who are persecuted by the beast for a time ,times and a half in Daniel 7
Daniel 7
25 And he shall speak great words against the most High, and shall wear out the saints of the most High, and think to change times and laws: and they shall be given into his hand until a time and times and the dividing of time
Reading revelation 12,we learn that this time,times and a half is 1260 days which is exactly 42 months on the Hebrew calendar.
Yet again in Daniel 11,we find the same persecution before the time of the end which takes place for a time,times and a half.This persecution includes imprisoned and death as it does in revelation 13.
Daniel 11:33-35
Wise leaders will give instruction to many, but these teachers will die by fire and sword, or they will be jailed and robbed.
During these persecutions, little help will arrive, and many who join them will not be sincere.
And some of the wise will fall victim to persecution. In this way, they will be refined and cleansed and made pure until the time of the end, for the appointed time is still to come.
Again ,this tribulation lasts for a time,times and a half.
Daniel 12:6-7
One of them asked the man dressed in linen, who was now standing above the river, “
How long will it be until these shocking events are over?”
The man dressed in linen, who was standing above the river, raised both his hands toward heaven and took a solemn oath by the One who lives forever, saying, “
It will go on for a time, times, and half a time. When the shattering of the holy people has finally come to an end, all these things will have happened.”
And as I said ,we learn from revelation 12 that a time,times and a half is 3.5 years.1260 days.
The same amount of time the saints in revelation 13 are given into the hands of he beast which is 42 months.
Revelation 12
6 The woman fled into the wilderness to a place prepared for her by God, where she might be taken care of for
1,260 days.
14 The woman was given the two wings of a great eagle, so that she might fly to the place prepared for her in the wilderness, where she would be taken care of
for a time, times and half a time, out of the serpent’s reach.
Yet again,we see the saints who are persecuted for these 42 months here in revelation 12.
Revelation 12
17 Then the dragon was enraged at the woman and went off to wage war against the rest of her offspring—those who keep God’s commands and hold fast their testimony about Jesus.
These Israelis do not flee into the wilderness but instead do what Jesus commands them to do in the gospel .Preach the gospel and warn Israel to repent.The kingdom of God is at hand.