'Fifties' in the Bible

But for the rest, take from among the people able men, such as have the fear of God, true men hating profits wrongly made; and put such men over them, to be captains of thousands, captains of hundreds and of fifties and of tens;

And he made selection of able men out of all Israel, and made them heads over the people, captains of thousands, captains of hundreds and of fifties and of tens.

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.

And he will make them captains of thousands and of fifties; some he will put to work ploughing and cutting his grain and making his instruments of war and building his war-carriages.

For fire came down from heaven and put an end to the first two captains of fifty and their fifties; but now let my life be of value in your eyes.