An epidemic terror of the end of the world has several times spread over the nations. The most remarkable was that which seized Christendom about the middle of the tenth century. Numbers of fanatics appeared in France, Germany, and Italy at that time, preaching that the thousand years prophesied in the Apocalypse as the term of the world's duration were about to expire, and that the Son of Man would appear in the clouds to judge the godly and the ungodly. The delusion appears to have been discouraged by the Church, but it nevertheless spread rapidly among the people.[51]

[51] See Gibbon and Voltaire for further notice of this subject.

Memoirs of Extraordinary Popular Delusions and the Madness of Crowds — Part 179

The scene of the last judgment was expected to be at Jerusalem. In the year 999, the number of pilgrims proceeding eastward, to await the coming of the Lord in that city, was so great that they were compared to a desolating army. Most of them sold their goods and possessions before they quitted Europe, and lived upon the proceeds in the Holy Land. Buildings of every sort were suffered to fall into ruins. It was thought useless to repair them, when the end of the world was so near. Many noble edifices were deliberately pulled down. Even churches, usually so well maintained, shared the general neglect. Knights, citizens, and serfs, travelled eastwards in company, taking with them their wives and children, singing psalms as they went, and looking with fearful eyes upon the sky, which they expected each minute to open, to let the Son of God descend in his glory.

Memoirs of Extraordinary Popular Delusions and the Madness of Crowds — Part 179

During the thousandth year the number of pilgrims increased. Most of them were smitten with terror as with a plague. Every phenomenon of nature filled them with alarm. A thunder-storm sent them all upon their knees in mid-march. It was the opinion that thunder was the voice of God, announcing the day of judgment. Numbers expected the earth to open, and give up its dead at the sound. Every meteor in the sky seen at Jerusalem brought the whole Christian population into the streets to weep and pray. The pilgrims on the road were in the same alarm:

Memoirs of Extraordinary Popular Delusions and the Madness of Crowds — Part 179

"Lorsque, pendant la nuit, un globe de lumière S'échappa quelquefois de la voûte de cieux, Et traça dans sa chûte un long sillon de feux, La troupe suspendit sa marche solitaire."[52]