That's not actually true (according to Wikipedia and a few other sources, at least). The 'blood is thicker than water' saying has been around for centuries in various forms with the current meaning, and the covenant/womb variation is relatively recent, and mostly stems from a few books that claim that it's the 'real meaning' without sources or proof.
That's not actually true (according to Wikipedia and a few other sources, at least). The 'blood is thicker than water' saying has been around for centuries in various forms with the current meaning, and the covenant/womb variation is relatively recent, and mostly stems from a few books that claim that it's the 'real meaning' without sources or proof.