'Number' in the Bible

I saw, and I heard something like a voice of many angels around the throne, the living creatures, and the elders; and the number of them was ten thousands of ten thousands, and thousands of thousands;

I heard the number of those who were sealed, one hundred forty-four thousand, sealed out of every tribe of the children of Israel:

After these things I looked, and behold, a great multitude, which no man could number, out of every nation and of all tribes, peoples, and languages, standing before the throne and before the Lamb, dressed in white robes, with palm branches in their hands.

The number of the armies of the horsemen was two hundred million. I heard the number of them.

and that no one would be able to buy or to sell, unless he has that mark, the name of the beast or the number of his name.

Here is wisdom. He who has understanding, let him calculate the number of the beast, for it is the number of a man. His number is six hundred sixty-six.

I saw, and behold, the Lamb standing on Mount Zion, and with him a number, one hundred forty-four thousand, having his name, and the name of his Father, written on their foreheads.

I saw something like a sea of glass mixed with fire, and those who overcame the beast, his image, and the number of his name, standing on the sea of glass, having harps of God.

and he will come out to deceive the nations which are in the four corners of the earth, Gog and Magog, to gather them together to the war; the number of whom is as the sand of the sea.