Seventh Day in the Octave of Christmas: "Children, it is the last hour"

... just as you heard that the antichrist was coming, so now many antichrists have appeared.
Thus we know this is the last hour.

-- 1 Jn 2:18-21

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, especially the "intrinsically perverse" political form of a secular messianism.

-- CCC 676

Before Christ's second coming the Church must pass through a final trial that will shake the faith of many believers. The persecution that accompanies her pilgrimage on earth will unveil the "mystery of iniquity" in the form of a religious deception offering men an apparent solution to their problems at the price of apostasy from the truth. The supreme religious deception is that of the Antichrist, a pseudo-messianism by which man glorifies himself in place of God and of his Messiah come in the flesh.

-- CCC 675

The Church encourages us to prepare ourselves for the hour of our death. In the ancient litany of the saints, for instance, she has us pray: "From a sudden and unforeseen death, deliver us, O Lord"; to ask the Mother of God to intercede for us "at the hour of our death" in the Hail Mary; and to entrust ourselves to St. Joseph, the patron of a happy death.

Every action of yours, every thought, should be those of one who expects to die before the day is out. Death would have no great terrors for you if you had a quiet conscience. . . . Then why not keep clear of sin instead of running away from death? If you aren't fit to face death today, it's very unlikely you will be tomorrow. . . .

Praised are you, my Lord, for our sister bodily Death,
from whom no living man can escape.
Woe on those who will die in mortal sin!
Blessed are they who will be found
in your most holy will,
for the second death will not harm them.

-- CCC 1014

Art: Luca Signorelli, Sermon and Deeds of the Antichrist, Orvieto.