J. Ridley Stroop explained the name of his book, God’s Plan and Me. It’s a good explanation.
“God’s Plan” simply means that the plan or the teaching is God’s; that the lessons originated with him; that they partake of his nature and are divine. Certainly this is the kind of teaching that we all want. This is the very quality that makes the teaching peculiar or different. It is different from all human teachings because it comes from a different source; it is of divine origin. Paul reminds us of the fact that man had no part in providing this teaching when he asks the questions, “For who hath known the mind of the Lord? or who hath been his counsellor?” (Rom. 11:34). Since God thus provided the plan without the aid of man and has never delegated to man the privilege of injecting his own ideas into it, we should be exceedingly careful to remember that it is God’s plan and that we should treat it as such.