"Bible Prophecy foretells of a time when what scripture refers to as the mark of the beast will come upon “all, both small and great, rich and poor, free and slave” and that whoever receives this mark will be doomed forever.
Revelation 14:9-11 says their destiny will be “fire,” “brimstone” and “the wrath of God.” If you search the entire Bible, you will never find a more solemn warning than what is written in this passage, and thus this is evidently something very significant and extremely important to God. Despite this, there are countless Christians that have concluded there are no clear answers on what the mark of the beast can be."
https://www.markbeast.org/
"17And that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name."
https://biblehub.com/kjv/revelation/13.htm
"25For it is easier for a camel to go through a needle's eye, than for a rich man to enter into the kingdom of God. 26And they that heard it said, Who then can be saved? 27And he said, The things which are impossible with men are possible with God."
https://biblehub.com/kjv/luke/18.htm
"“A great crowd” of people from all nations will survive “the great tribulation,” which will end with the war of Armageddon.—Revelation 7:9, 14.
What else can we learn from the Bible?
God wants as many as possible to survive Armageddon. He destroys the wicked only as a last resort.—Ezekiel 18:32."
https://www.jw.org/en/library/magazines/watchtower-no6-2017-november/survive-armageddon/
"64b. Merchants and salesmen will not enter the places of my father."
http://www.gnosis.org/naghamm/gosthom-davies.html