'Thousands' in the Bible

So I took the heads of your tribes, wise men and respected, and made them rulers over you, captains of thousands and captains of hundreds and captains of fifties and captains of tens, and overseers of your tribes.

He is a young ox, glory is his; his horns are the horns of the mountain ox, with which all peoples will be wounded, even to the ends of the earth: they are the ten thousands of Ephraim and the thousands of Manasseh.