'Number' in the Bible

And I saw, and I heard the voice of many messengers round the throne, and the living creatures, and the elders -- and the number of them was myriads of myriads, and thousands of thousands --

And I heard the number of those sealed, (one hundred and forty four thousands were sealed out of all the tribes of the sons of Israel):

After these things I saw, and lo, a great multitude, which to number no one was able, out of all nations, and tribes, and peoples, and tongues, standing before the throne, and before the Lamb, arrayed in white robes, and palms in their hands,

and the number of the forces of the horsemen is two myriads of myriads, and I heard the number of them.

and that no one may be able to buy, or to sell, except he who is having the mark, or the name of the beast, or the number of his name.

Here is the wisdom! He who is having the understanding, let him count the number of the beast, for the number of a man it is, and its number is six hundred and sixty six.

and I saw as a sea of glass mingled with fire, and those who do gain the victory over the beast, and his image, and his mark, and the number of his name, standing by the sea of the glass, having harps of God,

and he shall go forth to lead the nations astray, that are in the four corners of the earth -- Gog and Magog -- to gather them together to war, of whom the number is as the sand of the sea;