'Heads' in the Bible

These are heads of the house of their fathers: Sons of Reuben first-born of Israel are Hanoch, and Phallu, Hezron, and Carmi: these are families of Reuben.

And Eleazar, Aaron's son, hath taken to him one of the daughters of Putiel for a wife to himself, and she beareth to him Phinehas: these are heads of the fathers of the Levites, as to their families.

And thou -- thou dost provide out of all the people men of ability, fearing God, men of truth, hating dishonest gain, and hast placed these over them, heads of thousands, heads of hundreds, heads of fifties, and heads of tens,

and Moses chooseth men of ability out of all Israel, and maketh them chiefs over the people, heads of thousands, heads of hundreds, heads of fifties, and heads of tens,