'Third' in the Bible

and in the third chariot white horses; and in the fourth chariot grizzled strong horses.

And it shall come to pass, that in all the land, saith Jehovah, two parts therein shall be cut off and die; but the third shall be left therein.

And I will bring the third part into the fire, and will refine them as silver is refined, and will try them as gold is tried. They shall call on my name, and I will hear them: I will say, It is my people; and they shall say, Jehovah is my God.