the Exodus is a kind of ''disassociation'' from the pagans amongst whom you used to live, a Clear message you convey to them to let them know that ''we have nothing to do with you and that which you follow'' ... If you look into the life of Abraham (peace be upon him), you'll also see something simlar, a kind of ''Exodus'' where he leaves the people amongst he used to live and ''disassociate'' himself with them, and then goes to a new place in which there is absolutely nothing in order to build something, a family, a new way of life free of all the evil things of before, a God-fearing family, society, a better society, a more just society, a society ruled by God's rules etc.
the Israelites, they left a tyranical society whos rules and legislation is built on 'man-made' Laws to build (and live in) a new type of society whos rules and legislation is based on 'God`s' Laws ... a better society, a more just society, a God-fearing society .. Today, its quite the opposite, people are leaving and throwing behind their backs ''Gods Law'' under the pretext that some laws are ''barbaric'' and prefer to go after man-made Laws ... Where are you going O people ?