You are completely missing the point by misplacing concreteness.<quoted text>
Zoroastrianism may resemble something of Christianity on the surface, but a close comparison of the two will reveal the contradictory differences between them.
Worship in Zoroastrianism is legalistic and impersonal, reflecting the view of its impersonal god, Ahura-Mazda.
Apples vs oranges....
Man-made doctrine vs. God's unique revelation of Himself....
The point is a dualistic view of things. The primary proponent of that in ancient, B.C. times were the Zoroastrians. THEY influenced the thinking of the common person along the trade routes, the Greeks, etc. The Greeks OBLIVIOUSLY and EVIDENTLY influenced Saul as demonstrated in his writings and those of his followers ... mostly gentiles in the Hellenized regions of the eastern Mediterranean. They also influenced the thought of a LOT of non-canonical Hebrew writers.
Try to remember that Israel and Judea were conquered by Alexander the Great, too. This expanded intercultural influences that rocked Judean life and thought, exposing them to far more than just what passed through on the trade route between the Eastern metropolises and Egypt.
You DO realize that Judea was situated smack on the juncture between no less than six such trade routes, and extant surviving writings clearly demonstrate that the Hebrew-Aramaic (itself evidence of outside influence) speakers speakers were no where near as parochial as yourself.