Why is the mark of the Beast the unforgivable sin? Rev. 14:9-10 is clear about the eternal fate of those that take the mark of the Beast.
“And another angel, a third, followed them, saying with a loud voice, “If anyone worships the beast and its image and receives a mark on his forehead or on his hand, he also will drink the wine of God’s wrath, poured full strength into the cup of his anger, and he will be tormented with fire and sulfur in the presence of the holy angels and in the presence of the Lamb. And the smoke of their torment goes up forever and ever, and they have no rest, day or night, these worshipers of the beast and its image, and whoever receives the mark of its name.” Revelation 14:9-11
Sadly, well-respected Bible teachers such as John McArthur have come out and contradicted the Biblical account and said that people who take the mark of the Beast will be able to repent and receive the redemption offered by Jesus Christ. This questions the inerrancy of the Bible and what if the mark of the Beast is not just a microchip but transforms the person and makes them a hybrid like the Nephilim. Jesus said that the last days will be like the days of Noah when the Nephilim were on the earth. In Rev. 9 what does it mean that death will flee from them? Also, Rev 16:2 when those with the mark have loathsome sores but cannot die. Could the mark of the Beast produce a genetic transformation? Perhaps the recipients are promised eternal life by receiving the Beast’s demonic “DNA”? Listen to what Nelson and Doug have to say about this possibility.