Man of sin

a designation of Antichrist given in 2 Thess. 2:3-10, usually
regarded as descriptive of the Papal power; but "in whomsoever
these distinctive features are found, whoever wields temporal
and spiritual power in any degree similar to that in which the
man of sin is here described as wielding it, he, be he pope or
potentate, is beyond all doubt a distinct type of Antichrist."