'Third' in the Bible

And with the third chariot [there were] white horses, and with the fourth chariot [there were] strong dappled horses.

{And then} in all the land," {declares} Yahweh, "{two thirds} will be cut off and perish, and one third will be left alive in it.

And I will bring the [remaining] third into the fire, and I will refine them like [one] refines silver, and I will test them like [one] tests gold. They will call my name, and I will answer them. I will say, 'They are my people,' and they will say, 'Yahweh [is] my God.'"