The New Testament was born in a world where two major currents intersected:

Biblical/Jewish tradition

One God, creator, personal.

History with meaning (creation → covenant → salvation).

Hope for a definitive future (Messiah, resurrection, judgment).

Greco-Roman world

Greek language, philosophical categories of Plato, Aristotle, Stoics.

Concepts such as logos (reason, meaning of the universe), soul, virtue, human nature.

The New Testament is written in Greek and uses many of these categories. Classic example: the prologue to the Gospel of John (“In the beginning was the Logos”) dialogues de facto with Stoic and Platonic philosophy, but reinterprets it in a Christian key.

We all need a moral foundation, but our parents' moral foundation is not always perfect, and the moral foundation of states is corruption. So what will your moral foundation be? That of social media? That of your favorite influencer?

My moral foundation is my culture, the New Testament, only adapted to times of war. I am not Jesus Christ; I do not have that capacity to forgive my enemies.