blood covenant

Oath sealed crimson

A blood covenant is a binding agreement sealed by the mingling or exchange of blood between parties.

In religious and anthropological contexts, it represents the most solemn form of oath—unbreakable and often understood as creating a familial bond between the participants.

The practice appears in ancient Near Eastern cultures and biblical narratives, where cutting flesh and mixing blood signified that violating the pact meant death.

They became blood brothers through a blood covenant.

The term now sometimes appears in evangelical Christianity to describe God's relationship with humanity through Christ's sacrifice.

Opposites
binding severity

blood covenantverbal agreement

Spoken mutual commitment

gentleman's agreement · empty promise · lip service · handshake deal · pinky promise

ritual formality

blood covenantunspoken agreement

Mutual accord never voiced

tacit understanding · implied consent

relational depth

blood covenantacquaintanceship

State of knowing someone

fair-weather friendship · business relationship · marriage of convenience · stranger · estrangement

Family

blood, covenant, bloods, bloody, bloodied, bloodier, bloodiest, bloodily, bloodless

Familiarity
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