How did Judaism and Christianity influence our understanding of citizenship and the law?

Judaism and Christianity both have some principles in common known as Judeo-Christian principles which influences our understanding of citizenship and the law. They include:

Treating others well and in a way as we would love others to treat us too.

Having the view of every human being equal on each other which prevents any form of discrimination and also ensuring that justice is meted out at the right time for any action taken.