But you also agree that it’s the blood of Jesus AND not taking the mark of the beast for salvation during the tribulation?
Believing in Jesus is no longer the only condition for salvation?
"Taking the Mark" is tantamount to rejecting Christ, so it negates faith.. The "Mark" isn't a literal mark, its accepting the beast system into your mind, just as the mark on the right hand signifies 'doing' the work of the beast, it also is not a literal mark. Anti-Christ means instead of Christ, deception is his Modus Operandi and he'll be very good at it, nearly indistinguishable from the real deal.
"At that time, if anyone says to you, ‘Look, here is the Christ!’ or ‘There He is,’ do not believe it. For false Christs and false prophets will appear and perform great signs and wonders that would deceive even the elect, if that were possible. See, I have told you in advance." (Matthew 24:23-25)