Full Idea
The notion from which both Judaism and Christianity to a large degree sprang is the notion of family life, the relations of father and son, perhaps the relations of members of a tribe to one another.
Gist of Idea
Judaism and Christianity views are based on paternal, family and tribal relations
Source
Isaiah Berlin (The Roots of Romanticism [1965], Ch.1)
Book Reference
Berlin,Isaiah: 'The Roots of Romanticism' [Pimlico 2000], p.3
A Reaction
He compares this with Plato's mathematical view of reality. Key stories would be Abraham and Isaac, and Jesus being the 'son' of God, which both touch the killing of the child. Berlin means that the universe is explained this way.