God has not told us everything that He knows or plans. There are secrets that belong to Him alone. At the same time, the Lord has revealed certain things that are for us and our children forever (
God’s hidden, or secret will encompasses His sovereign choices which direct all things that come to pass in creation (
God also has a revealed will, it is found first in scripture, then in the teachings of the fathers, then in the teachings of the ecumenical councils and creeds, then in the ancient liturgies, and finally in the icons. They all contain that which God has revealed to the world for our salvation.
The rub in all of this occurs when we fail to remember that His hidden will (those things which unfold in our lives) is at work in such a way that it tests our faith in His revealed will. Faith is the assurance that God has a good purpose for His people that cannot be thwarted (