Where did Jesus get His morality from?

[Minimalist]

Aside from Thucydides (who makes no mention of Socrates or philosophers in general) and Xenophon, there are in fact no straightforward histories contemporary with Socrates that dealt with his own time and place.

What part of the bolded bits is giving you the most trouble? We have zero references from the early first century AD about your boy. ZERO. NADA. ZiILCH. BUPKES.

What we have are the later ramblings of "followers" which do not even claim to have met jc but merely tell stories about him. People told stories of Hercules, too. Doesn't make him real.

A single reference from Philo or Pliny the Elder would suffice. We have the Gabriel Revelation stone which indicates that this childish belief of coming back from the dead in 3 days was already known at the end of the first century BC. Yet Philo has nothing to say and Pliny, who commented on absurd beliefs across the empire never makes the slightest reference to an executed criminal coming back from the dead.

I am not making special evidentiary demands for your fairy tale. One reference would suffice. Socrates has them. JC does not.