CIC 676 The Antichrist’s deception already begins to take shape in the world every time the claim is made to realize within history that messianic hope which can only be realized beyond history through the eschatological judgment. The Church has rejected even modified forms of this falsification of the kingdom to come under the name of millenarianism,1 especially the “intrinsically perverse” political form of a secular messianism.2

1 Cf. DS 3839.
2 Pius XI, Divini Redemptoris, condemning the “false mysticism” of this “counterfeit of the redemption of the lowly”; cf. GS 20-21.