Genesis 28:14 is part of what is known as the Abrahamic Covenant. The promise of God that is eternal, irrevocable and extends to all the families of the earth.
“And thy seed shall be as the dust of the earth, and thou shalt spread abroad to the west, and to the east, and to the north, and to the south; and in thee and in thy seed shall all the families of the earth be blessed.”

The Hebrew word for FAMILIES in Genesis 28:14:
Strongs H4940:
- Transliteration: mishpachah
- Pronunciation: mish-paw-khaw’
- Definition: From H8192 (compare H8198): a {family} that {is} circle of relatives; figuratively a class (of {persons}) a species (of animals) or sort (of things); by extension a tribe or people: {family} kind (-red).