I place in the number of apparitions, not only those of good or bad angels, and the spirits of the dead who show themselves to the living, but also those of the living who show themselves to the angels or souls of the dead; whether these apparitions are seen in dreams, or during sleep, or awaking; whether they manifest themselves to all those who are present, or only to the persons to whom God judges proper to manifest them. For instance, in the Apocalypse,[36] St. John saw the four animals, and the four-and-twenty elders, who were clothed in white garments and wore crowns of gold upon their heads, and were seated on thrones around that of the Almighty, who prostrated themselves before the throne of the Eternal, and cast their crowns at his feet. And, elsewhere: "I saw four angels standing at the four corners of the world,[37] who held back the four winds and prevented them from blowing on the earth; then I saw another angel, who rose on the side of the east, and who cried out to the four angels who had orders to hurt the earth, Do no harm to the earth, or the sea, or the trees, until we have impressed a sign on the foreheads of the servants of God. And I heard that the number of those who received this sign (or mark) was a hundred and forty-four thousand. Afterwards I saw an innumerable multitude of all nations, tribes, people, and languages, standing before the throne of the Most High, arrayed in white garments, and having palms in their hands." And in the same book[38] St. John says, after having described the majesty of the throne of God, and the adoration paid to him by the angels and saints prostrate before him, one of the elders said to him,--"Those whom you see covered with white robes, are those who have suffered great trials and afflictions, and have washed their robes in the blood of the Lamb; for which reason they stand before the throne of God, and will do so night and day in his temple; and He who is seated on the throne will reign over them, and the angel which is in the midst of the throne will conduct them to the fountains of living water." And, again,[39] "I saw under the altar of God the souls of those who have been put to death for defending the Word of God, and for the testimony which they have rendered; they cried with a loud voice, saying, When, O Lord, wilt thou not avenge our blood upon those who are on the earth?" &c. All these apparitions, and several others similar to them, which might be related as being derived from the holy books as well as from authentic histories, are true apparitions, although neither the angels nor the martyrs spoken of in the Apocalypse came and presented themselves to St. John; but, on the contrary, this apostle was transported in spirit to heaven, to see there what we have just related. These are apparitions which may be called passive on the part of the angels and holy martyrs, and active on the part of the holy apostle who saw them. Footnotes: [22] Luke i. 10-12, &c.