You can’t buy or SELL unless you worship the beast... Worship the god of Sodom or close your business.
Revelation 13 explains the mark of the beast. This is discussed during the time of Tribulation. I think most would agree that the government and large corporations have the means and technology to do this with electronic tattoos or small implanted devices.
Those that take the mark are doomed. But does this apply to taking the mark before Tribulation? And what about those that may be in the military or prison that could be forced to take it? I would think in the military one would be discharged, but in a prison or FEMA camp they could just hold you down or drug you. When you look at government’s hard line position on forced vaccinations, Christians should be concerned.
This raises the question as to whether government institutions are actually or planning on doing this and what methods of “persuasion” will be employed.