The mark of beast isn't really a physical mark but that word 'mark' comes from the root word in hebrew Charagma & Charagma means nature or character. A persons nature or character will depend on the mindset of the person because whatever is in the mind will be reflected by an outward expression. The Bible says that the mind is the battlefield, there is a battle between the flesh & spirit because remember a carnal mind is the opposite of God. The Bible says we ought to have the mind of Christ so we could reflect that on an outward expression but having the 'Charagma' that's the nature & the character of Christ. The Charagma of Christ will only be in you when you renew & cleanse your mind daily with the word of God, then will Christ choose to dwell in this habitation because you are the latter house of God & all of creation is groaning, even there's a groaning in us for the sons of God to manifest & to have the Charagma of Christ that's coming into the full measure & stature of Christ Jesus.