Apocalipsis 9:15

And the four angels were loosed, which were prepared for an hour, and a day, and a month, and a year, for to slay the third part of men.

And the four angels were loosed, who were prepared — By loosing them, as well as by their strength and rage.

To kill the third part of men — That is, an immense number of them.

For the hour, and day, and month, and year — All this agrees with the slaughter which the Saracens made for a long time after Mahomet's death. And with the number of angels let loose agrees the number of their first and most eminent caliphs. These were Ali, Abubeker, Omar, and Osman. Mahomet named Ali, his cousin and son-in-law, for his successor; but he was soon worked out by the rest, till they severally died, and so made room for him. They succeeded each other, and each destroyed innumerable multitudes of men. There are in a prophetic Com. Years. Com. Days. Hour....... 8 Day............ 196 in all212years. Month........... 15.........318 / Year............ 196.........117 / Now, the second woe, as also the beginning of the third, has its place between the ceasing of the locusts and the rising of the beast out of the sea, even at the time that the Saracens, who were chiefly cavalry, were in the height of their carnage; from their, first caliph, Abubeker, till they were repulsed from Rome under Leo IV. These212years may therefore be reckoned from the year634to847. The gradation in reckoning the time, beginning with the hour and ending with a year, corresponds with their small beginning and vast increase. Before and after Mahomet's death, they had enough to do to settle their affairs at home. Afterwards Abubeker went farther, and in the year634gained great advantage over the Persians and Romans in Syria. Under Omar was the conquest of Mesopotamia, Palestine, and Egypt made. Under Osman, that of Afric, (with the total suppression of the Roman government in the year647,) of Cyprus, and of all Persia in651. After Ali was dead, his son Ali Hasen, a peaceable prince, was driven out by Muavia; under whom, and his successors, the power of the Saracens so increased, that within fourscore years after Mahomet's death they had extended their conquests farther than the warlike Romans did in four hundred years.