According to the torah ,why did egypt's pharaoh mistrust the israelites and why did he free them from slavery to leave egypt

First, the Torah or “the book of the Law of Moses” is a book that belongs to the religion of Judaism and forms all the basis for the rules and practices of the religion. In this book it is stated that the Israelites had a different believed, as they believed in monotheism, from the Egyptian pharaoh. Nevertheless, the pharaoh didn’t let them free, on the opposite, he became mistrustful of them, as their population increased, and made them work as slaves. Nevertheless, God send horrible suffering to every firstborn Egyptian son; plagues of insects, sickness and death. Finally, this led up to the pharaoh changing his mind, letting Moses guide the Israelites out of Egypt. Hope this helps!