Does one Need to Know Who is Antichrist, in Order not to Fall?

I think this may depend on how clear the Antichrist is of his Antichristian intentions at a given point.

John Fisher believed he owed Henry VIII loyalty - and Henry VIII acted like an Antichrist.

Here is a historical novelist and at least amateur historian of such times who did a little research on St. John Fisher, the famous colleague in martyrdom to St. Thomas More:

December 22, 1534 – Bishop Fisher Writes to Cromwell
Published by janetwertman on December 22, 2018
https://janetwertman.com/2018/12/22/december-22-1534-bishop-fisher-writes-to-cromwell/