This could mean no "new" Christians. The ones that are still here have repented.
But also the Bible says those with the seal of God, won't be affected by the plagues. ( Rev 9:4; ) so who are these people with the seal of God on their foreheads during the tribulation?
There are many who come to Jesus / God in the tribulation. These are people that are sealed. A Christian does not need a '''seal''' on the forehead. They are already sealed
by the blood of Jesus.
You come to the view you do because you don't believe in OSAS. You need to better grasp what a Christian is

.
There is nothing that says this is the Holy Spirit, the Holy Spirit is here now, and evil people are here now. Besides you have the order of events here. The rapture won't happen until "after" the man of lawlessness is revealed. ( 2 Thess 2:3; ) the man of lawlessness is revealed first. So if the Holy Spirit leaves so the man of lawlessness can appear, Christians are without the Holy Spirit
until the rapture. Also we know there will Christians come out of the tribulation ( Rev 7:14; ) so how are they able to be Christians without the Holy Spirit?
The anti-christ cannot have his way if the Holy Spirit is here, fact. The scripture I gave says that. The restrainer can only be God. Nobody else can restrain the anti-christ, fact.
I dont believe Christians will be without the Holy Spirit. This verse is for me confirmation that the rapture will happen before the anti-christ reveals himself in the temple.
There is a suffering we will endure before this happens. Humans vs humans. A time when many come claiming to be Jesus. Matt 24:4-11. Note how persecution comes before and during the time false prophets reveal themselves. When the anti-christ reveals himself,
nobody else will come and claim to be Jesus, fact.
Many will come to Jesus in the tribulation. These are tribulation saints as mentioned in Rev 6:9-11.[BIBLE] 9 When he opened the fifth seal, I saw under the altar the souls of those who had been
slain because of the word of God and the testimony they had maintained. 10 They called out in a loud voice, “How long, Sovereign Lord, holy and true, until you judge the inhabitants of the earth and avenge our blood?” 11
Then each of them was given a white robe, and they were told to wait a little longer, until the full number of their fellow servants, their brothers and sisters, were killed just as they had been.[/BIBLE] Note they were ''given'' a white robe. This ties in with Matt 24:13[BIBLE] but the one who stands firm to the end will be saved[/BIBLE]. Christians are already ''saved''. There is no further need to ''test'' them.
In Matt 24, it says the rapture will happen"after" the tribulation of those days. ( Matt 24:29-31; Mark 13:24-27; )
No, disagree. The verses you quoting are separate to those of the rapture. For example in verse 30 we see that '''all'' see Jesus. [BIBLE]Matt 24:30 Then will appear the sign of the Son of Man in heaven. And then
all the peoples of the earth will mourn when they see the Son of Man coming on the clouds of heaven, with power and great glory .[/BIBLE]
The second coming of Jesus is also a day that will not surprise anyone. All just need add seven years onto the day the anti-christ reveals himself.
These scriptures speak to a different event to the second coming Matt 24:36-41: [BIBLE] 36 “But about that day or hour
no one knows, not even the angels in heaven, nor the Son, but only the Father. 37 As it was in the days of Noah, so it will be at the coming of the Son of Man. 38 For in the days before the flood, people were eating and drinking, marrying and giving in marriage, up to the day Noah entered the ark; 39 and they knew nothing about what would happen until the flood came and took them all away. That is how it will be at the coming of the Son of Man. 40 Two men will be in the field;
one will be taken and the other left. 41 Two women will be grinding with a hand mill;
one will be taken and the other left. [/BIBLE]