https://en.wikipedia.org/wiki/History_of_ancient_Israel_and_Judah
Israelite monotheism evolved gradually out of pre-existing beliefs and practices of the ancient world.
[75] The religion of the Israelites of Iron Age I, like the Canaanite faith from which it evolved
[76] and other ancient Near Eastern religions, was based on
a cult of ancestors and worship of family gods (the "gods of the fathers").
[77] Its major deities were not numerous –
El, Asherah, and Yahweh, with Baal as a fourth god, and perhaps Shamash (the sun) in the early period.
[78] By the time of the early Hebrew kings,
El and Yahweh had become fused and Asherah did not continue as a separate state cult.