Where do Semitic religions come from?

Proto-Semites themselves were probably heliolaters. Akkadians, the first Semitic migrants from Arabia, absorbed the polytheistic culture and religion of Sumerians, a people that inhabited the south of modern Iraq. The Akkadian new religion was transported back to Arabia, and to Levant. From Levant, this religion migrated to Greece and Europe. The later monotheistic religion of the Canaanites may had been influenced by the Egyptians, or may had not been so. It probably was just a product of the Israelites' conceitedness, after they subjugated all the Canaanites by force. This religion gave rise later to both Christianity and Islam.