'Number' in the Bible

Then they were each given a white robe; and they were told to rest and wait quietly for a little while longer, until the number of their fellow servants and their brothers and sisters who were to be killed even as they had been, would be completed.

They had breastplates (scales) like breastplates made of iron; and the [whirring] noise of their wings was like the [thunderous] noise of countless horse-drawn chariots charging [at full speed] into battle.

The number of the troops of cavalry was twice ten thousand times ten thousand (two hundred million); I heard the number of them.

Then there was given to me a measuring rod like a staff; and someone said, “Rise and measure the temple of God and the altar [of incense], and [count] those who worship in it.

and that no one will be able to buy or sell, except the one who has the mark, either the name of the beast or the number of his name.

Here is wisdom. Let the person who has enough insight calculate the number of the beast, for it is the [imperfect] number of a man; and his number is six hundred and sixty-six.

Then I saw something like a sea or large expanse of glass mixed with fire, and those who were victorious over the beast and over his image and over the number corresponding to his name were standing on the sea or large expanse of glass, holding harps of God [worshiping Him].

and will come out to deceive and mislead the nations which are in the four corners of the earth—[including] Gog and Magog—to gather them together for the war; their number is like the sand of the seashore.