What religion did Moses practice?

In the time of The Bible, the Israelites (today called the Jews) practiced ethical monotheism, worshiping a deity known by a number of names-- El, Elohim, Yahveh, Adonoi, etc. (This deity is generally translated as God or the Lord.)

At certain times, however, the Israelites went astray and lapsed into polytheism, worshiping Babylonian or Canaanite gods; but then a prophet or other leader would guide them back to monotheism and they would re-dedicate themselves to serving only the One God. Throughout the Hebrew Bible (Old Testament), we read about the development of the religion of the Hebrews, or Israelites, which came to be known as Judaism.