'One' in the Bible

In the seventh month, in the one and twentieth day of the month, came the word of the LORD by the prophet Haggai, saying,

If one bear holy flesh in the skirt of his garment, and with his skirt do touch bread, or pottage, or wine, or oil, or any meat, shall it be holy? And the priests answered and said, No.

Then said Haggai, If one that is unclean by a dead body touch any of these, shall it be unclean? And the priests answered and said, It shall be unclean.

Since those days were, when one came to an heap of twenty measures, there were but ten: when one came to the pressfat for to draw out fifty vessels out of the press, there were but twenty.

And I will overthrow the throne of kingdoms, and I will destroy the strength of the kingdoms of the heathen; and I will overthrow the chariots, and those that ride in them; and the horses and their riders shall come down, every one by the sword of his brother.