'Fifties' in the Bible

And you will select from all the people men of ability, fearers of God, trustworthy men, haters of [dishonest] gain, and you will appoint [such men] over them [as] commanders of thousands, commanders of hundreds, commanders of fifties, and commanders of tens.

And Moses chose men of ability from all Israel, and he appointed them [as] heads over the people, [as] commanders of thousands, commanders of hundreds, commanders of fifties, and commanders of tens.