According to the covenant Yahweh made with Abraham, Egypt is not the home of the Hebrew people. It is the Promised Land in Canaan. The people are to return home to their land. (See: [[rc://en/tw/dict/bible/kt/covenant]] and [[rc://en/tw/dict/bible/kt/promisedland]])
This is a very important statement. Moses does not ask Pharaoh for permission to "let go" of the Hebrew people. Instead, he is demanding that Pharaoh free the Hebrew people.