I am surprised at that statement. You quote from the scripture but you do not wish to explain why you hold on to what you stated. That's of course not a revelation from God.
When you quoted Revelation 7, did you read the other chapters before and after it? or just took it in isolation and write - 'that is what it is'? I never mentioned anything regarding "Eschatological positions taken by Bible Christians regarding End Times and Millennium." Quite honestly I am not concerned nor do I really care about who or what they are.
I asked two simple questions. very relevant questions. Because you have quoted Rev 7. And said: Believers will be there in tribulation. You did not explain what you understood by what this tribulation meant. Or why believers should be there?
Now in the spirit of quoting verses like you have. Here is one:
1 Thessalonians 4:14-17
14 For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with him.
15 For this we say unto you by the word of the Lord, that we which are alive and remain unto the coming of the Lord shall not prevent them which are asleep.
16 For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:
17 Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.
18 Wherefore comfort one another with these words.
If you hold by what you have written then this part of God's promise does not hold true. Here Apostle Paul talks of all believers, not some.
God will judge the wicked and sentence them to eternal hell (Matt. 3:12; 25:41, 46; John 3:36; 5:29; Acts 24:25; Rom. 2:5, 8; 2 Thess. 1:9; Heb. 6:2; 2 Peter 2:9; 3:7; Rev. 14:9–11). The other blessed truth for believers is that God has not destined us for wrath (John 1:10; John 3:18, 36; 5:24; Rom. 5:1, 9; 8:1, 33–34).
There are other portions that I can go into. But then again it all depends on what the understanding of the tribulation is. As stated again: The most interesting thing which people do not realise is that the word 'rapture' is nowhere in the scripture. And that tribulation has been used to denote troubled times. The troubled times started the day man sinned. And it got aggravated hundredfold after the Lord went up to heaven after His resurrection. All the apostles talk about it in all the epistles constantly. We are already being refined for the kingdom. I do not know why someone will assume that tribulation he talks about would be any different. After all, it is stated: He knows. What would then, that mean?
So when you say you did not interpret. Then it is false. Cause at the end of your initial post you wrote: The multitude described in the above passage comes from great tribulation. They are believers. So, there will be believers in great Tribulation. This is an interpretation or an explanation of what you are understanding is.
In any case. you are free to believe what you want to believe. May God give us all His wisdom