deeper than a mere contract.
Scott Hahn's thoughts on the matter:
Kinship by covenant:
https://www.youtube.com/watch?v=NuvB2AGI_tw&t=882s
https://static1.squarespace.com/static/569543b4bfe87360795306d6/t/58bedc7ee58c6278e8b26d69/1488903306944/Bibliographic+Article+on+Covenant.pdf
The precise definition of covenant (Heb. b’rith, Gk. diatheke) is a matter of scholarly
debate, but many contemporary scholars would agree that it denotes a legal institution
establishing or re-establishing a familial bond between two or more parties by means of
an oath expressed in words, rituals, or both. The covenant bond created for the
participating parties various obligations, which were sometimes expressed as laws in a
text documenting the covenant relationship. Since covenants created kinship bonds,
familial language (father, son, brother) and affective terms (Heb. ahaba, “love,” hesed,
“faithfulness”) were often used to describe or prescribe the relationship of the parties.
Because covenants were often solemnized by a ceremony and the stipulations
documented in a text, the term covenant can be applied, at times, to the ceremonies
establishing a covenant, the laws governing it, or the document recording it.