The reason one of is Jewish and other is Catholic has nothing to do with stories we were told.
No, but the difference is, the giving of the torah, the exodus from egypt. Even witho5ut historical evidence, the torah gives us proof.
"Sha'al avicha v'yageidcha. Zikeinecha v'yomru lach"
Deuteronomy 32:7 7Remember the days of old; consider the generations long past. Ask your father and he will tell you, your elders, and they will explain to you.
The Torah gives over an unbroken chain. 600,000 left egypt, they stood before Mt Sinai. The torah tells us to carry this on generation to generation but also that there is proof..