R.C. Sproul said that if you don’t believe that God has ordained everything that ever happened or will happen, down to the movement of each individual molecule, then you are an atheist.
This is simply paganism dressed up as Christianity, and this fatalism is what almost every pagan religion believes.
This makes God into a weak God that can only do His will if he controls the actions of everything.
Our God is not weak. He is wise, and He displays His wisdom by achieving His will despite the best efforts of many to thwart it.
God has revealed all of His will to us in His word. You don’t have to wait for a special feeling or emotion to certify that you are doing His will. As a matter of fact, wondering and waiting to try to discern His will is self-defeating.
God’s immutability isn’t found in a theory that God is manipulating everything. God’s immutability is demonstrated in His fulfillment of the prophecies He has given, despite the fact that Satan and mankind moved to thwart their fulfillment.