Same-bloodedness

At any rate, this does tend to put in truer perspective the symbolic claim placed by Herodotus in the mouth of 'the Athenians'—also Ionians—in 480/479, that the fact of being Greek was constituted in essential part by 'same-bloodedness'.

Source: wiktionary

Even the style bears similarity, and, as Shin explains, both appealed to the 'same bloodedness' of the Korean people.

Source: wiktionary

The idea that the Bible develops the same logic of the political privilege given to the natives as compared with the strangers, the Greek theme of the suggegenia, the same-bloodedness, as a necessary condition for the equality in the dēmos, […]

Source: wiktionary