Many Christians expect the “beast” of Revelation to use microchips or other technology to create the Mark of the Beast and 666, which will be means of persecuting true Christians. However, the real Mark of the Beast will be much more subtle, clever and unexpected.
The Number of the Beast (666) is closely linked to the Mark of the Beast. It is a symbol of disobedience and human effort rather than submission, faith and reliance on God. Chapter 13 of the Book Revelation of Jesus explains 666 and the Mark of the Beast.