I think the presocratics had plenty of more interesting sources than the Jewish leaders! For example the Egytians - wasn't it Herodotus who said something like "Compared to the Egyptians in mathematics the Greeks are like small children". There is also a question of the Persian magi. The question is whether the Upanishads and Vedas had an influence on Heraclitus - this is a contested subject.
The rig veda has an interesting hymn on a conscious, creator - see 10.129. Also Heraclitus repeats this theme - fragment DK 30.
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