If the buying and selling are said to be spiritual then what are the rich poor great and small buying and selling in terms of spirituality ? certainly they are not buying spiritual gold from Jesus with the mark of the beast. How does a worldly govermental authority force or compel a person to recieve a spiritual mark ? Then buy and sell spiritual goods ? The malgnant ulcer that is said to be suffered by those with the mark is that a spiritual ulcer ? Why does not receiving the mark specifically call for endurance on the part of the holy ones, if it is something against their spiritual inclinations ? Whilst the Revelation mixes the physical with the metaphysical, the symbolic with the literal juxtaposing them, it's perculiar style, rendered by its author Jehovah, offers the possibility of disguising, hiding things in plain sight. The mark being tangible from an earthly human perspective squares all circles. Accepting something on your body which is representatative to the extent it can constitute 'a name' ['BRAND for branded} and then having to buy food for sustainance according to it would definately constitute eating foods dedicated to an idol. It would starve out believers. The prophesy is the most famous existing biblical prophesy, 666 being a commonly known cultural trope. No other fulfillment would prove the bible true and the watchtower in error in one move. Throwing the association of Jehovah's witnesses into confusion. Also many peoples of 'the nations' or even in other religions will, by their human instincts alone, not consent to being branded. Bringing them into consort with 'jehovah's people' for helping aiding and sympathising through human compassion (Matt24). It ostenciably widens the net for possible salvation 'a great mixed crowd'. Additionally those who do not consent and resist with violence and acts of guerilla sabotage against the 'wild beast' will offer the oppurtunity to frame all not complying as a catagory of non compliant criminals. In the modern age it has been associated with technologies such as RFID chip. Likely it will be technological and may encompas multiple forms such as ultra violet readable QR type codes tatoos & chip tech. The readable aspect of it constituting the intelectual content i.e. name / brand / data / metadata. Also of note the 42 months authority of the wild beast is half the 'lean years' of Joseph of Egypts famine dream exposition. The dream was offered to Joseph in the form of a riddle. There is an overt compendium. It is not reliant on modern technology the nazis force branded people. The Empire of Rome could have forced tattoos on conquoered nations by which to trade. However it was not likely always practical or viable with enough return on investment. The polling for taxation with the avaliability of modern tech would likely have made it a consideration for the ancient empires should it have been avaliable. A brand also ostenciably constitutes ownership. The actual final form/s of the mark are relevant as is the associated 'man' and dynamic of the authority, the form of the 'wild beast' the constituent meaning of the triple figured numerological code. They are all relevant as proving recognisable aspects. Although compared to the 'real world dynamic' of a tangible system for trade through additions to the human body they are all relevant 'wallpaper' as such comparative to a real world dynamic the details are relevant prophetic meta data.