Flesh and Blood (Origin)

What Is the Origin of the Saying "Flesh and Blood"?

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The term "flesh and blood" means biological family. So, "your flesh and blood" relates to family members with whom you share DNA (i.e., the same blood line).

Of note, husbands and wives are usually described as "flesh and blood," even though they are not literally of the same blood line.

Examples of Use:

We will always look after each other. We are flesh and blood.
We're brothers, Tim. You're my flesh and blood.
Our bonds are flesh and blood. Nothing beats that.

"Flesh and blood" can also be used to refer to mankind, usually with a connotation of weakness or fallibility. For example:

Of course we're not indestructible. We're just flesh and blood.
Jesus replied, "Blessed are you, Simon son of Jonah, for this was not revealed to you by flesh and blood, but by my Father in heaven.

In this meaning, the term "flesh and blood" is at least 1,000 years old. Here is a version from an Old English translation of the Bible from AD 1000: