'Third' in the Bible

Attached to the third chariot were white horses. Attached to the fourth chariot were speckled horses and gray horses.

It will come about in all of the land," declares the LORD, "that two thirds of the people living there will die, but a third will survive who live there.

And I will bring that surviving third through, testing them as if through fire, purifying them like silver, assaying them like gold. They will call on my name, and I will answer them. I will say, "This is my people,' and they will say, "The LORD is my God.'"