Flesh and Blood

This idiom can mean living material of which people are made of, or it can refer to someone's family.

One's flesh and blood may refer to one's family, or may denote all mankind. It is also used to denote the living material of which people are composed.The earliest usage of this phrase relates to the general 'mankind' usage. This comes from an Old English translation of the Bible - the Anglo-Saxon Gospels, Matthew XVI 17, circa 1000: Hit ye ne onwreah flaesc ne blod.

Ex: How could you betray your own flesh and blood?

Spanish: Carne viva/parentela

German: Fleisch und Blut