The Biblical word for God is “EL” and that word is not Jewish in origin, but rather it traces back to older Levant (Canaanite) religion. The patriarch Abraham is known as the father of the world’s three great monotheistic religions: Judaism, Christianity and Islam.
For centuries his faithfulness to one god (at a time when people worshiped many deities) has been regarded as a monumental break with the society around him. However, an archaeological discovery known as the Ugaritic texts is opening a window onto a different cultural context for Abraham’s story and it is turning most assumptions about “god” on their head.
EL is the supreme creator god of the Canaanites who lives with the other gods on Mount Zaphon (similar to Mount Olympus of the Greeks but located at the mouth of the Orontes river near the border between Turkey and Syria). He is the father of all the gods and men and is often addressed as such by the Canaanite gods. He is the god of the earth and the air who is represented by a bull. He is derived from the Sumerian god AN.
In the Bible EL is translated as God. Elohim is the plural form of EL yet in most places in the Bible it is used in the singular sense so it is also translated as God instead of gods. Strict monotheism was not fully developed in Israelite thought until their exile to Babylon.
Before then Yahweh (translated as Lord in the Bible) was the god of Israel and Judah (officially their only god) whose principle power and characteristic was that of justice and righteousness.
Because he judged other peoples and gods he soon came to be seen as the supreme God (the equivalent of EL), and finally as the only God for all people.
Polytheistism, God, and the Ugarit Text