I remembered when the subject of "The Mark of the Beast", would come up as a witness, I was told this. In Revelation it says that No man would be able to buy or sell unless they have that mark. The brothers at the Kingdom Hall, the Watchtower, and my own mother would tell me that it would not be a physical mark, but figurative and it represented this:
"The Mark on the Forehead was our thoughts, and The Mark on our hand was our actions."
After leaving the Watchtower, my thoughts were that if the Mark of the Beast were literal, and not figurative, "How many who are in the Watchtower would take that Mark of the Beast and accept the Anti-Christ?"