This appears to be a "Oneness" attempt to condemn folks who read their Bible and see The Godhood of The Lord Jesus Christ and of The Holy Ghost.
It would be sad if it was not so Anti-Christ!
{{{ 2. In one God eternally existing in one essence, yet co-equal persons, the Trinity: Father, Son & Holy Spirit. }}}
If I understand the writer, The 'Mark" of The Beast is belief in The Trinity.
So, this man is calling believers in the above statement of faith condemned by The Mark of The Beast!
Twisted scriptures indeed!
This reminds me of the past but long standing teaching of The Seventh Day Adventist Church that Sunday Worship is The Mark of The Beast!
I believe the essential issue is "Jesus Christ and Him Crucified".
All this other name calling stuff is just an attempt to divide the troops as the spiritual warfare ramps up toward the second coming of Jesus! (I think!)
Love, Joe