In reply to your 7/04 post at What if they convince people? (fivedoves.com)according to what Jesus said in Matthew 12:30, "That every idle word that men shall speak they shall give account thereof in the day of judgment." Romans 14:10 & 12 states, "All must appear before the judgment seat. So then everyone shall give account of himself to God." So everyone is going to give an account of what they said and did to the Lord.
However, we should all make our choices as to what to do based on the word of God. Obviously, the person who convinced another that taking the Covid-19 vaccine was the mark of the beast which would result in their ending up in the lake of fire did not base this on Rev. 13:15-18 because the mark of the beast is in the right hand or in the forehead while the Covid-19 vaccine like other vaccines is given in the left shoulder. And the person convinced not to take the vaccine because he or she did not want to end up in the lake of fire also did not base their decision not to take the vaccine on Rev. 13:15-18 either. The convincer gave out false information that the one convinced mistakenly believed because they were not searching the scriptures to find the correct information about the mark of the beast. It also a person's own choice whether they want to take the vaccine or not.