'Heads' in the Bible

And the people believed: and when they heard that Jehovah had visited the children of Israel, and that he had seen their affliction, then they bowed their heads and worshipped.

These are the heads of their fathers houses. The sons of Reuben the first-born of Israel: Hanoch, and Pallu, Hezron, and Carmi; these are the families of Reuben.

And Eleazar Aaron's son took him one of the daughters of Putiel to wife; and she bare him Phinehas. These are the heads of the fathers houses of the Levites according to their families.

And Moses chose able men out of all Israel, and made them heads over the people, rulers of thousands, rulers of hundreds, rulers of fifties, and rulers of tens.