'Two thirds' in the Bible

The charge was {two-thirds of a shekel} for the plowshare and for the mattock, and {a third of a shekel for the pick} and for the axe, and to set the goading sticks.

{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.