Divine Providence is a Fundemental Belief

 Maharal (Gevuras HaShem 47) You should know that there are three beliefs that form the foundation of Judaism so that if G-d forbid one of them fails the religious faith falls with it. 1) Divine Providence that G-d supervises the world 2)Everything is in G-d’s hands and there is nothing besides Him, and this is the belief in the reality of God... 3) The third belief is that God spoke to man and give him Torah.  And so when Moses came to redeem them and God saw their affliction and did not forsake them, it is said, "And the people believed that God had visited the children of Israel," etc., and this is the belief in providence... If He watches over people and their deeds and does not forsake them, then He certainly pays them their reward as well, which is not reasonable to say that He, sees their deeds and watches over them and does not punish them for their sins... And so from providence, reward and punishment follow.