Isa_48:16 Draw near to me, hear this: from the beginning I have not spoken in secret, from the time it came to be I have been there.” And now the Lord GOD has sent me, and his Spirit.

In Isaiah 48, God states they does not make secret decrees. Everything God decrees God decrees to people. The purpose is so that the people can both understand what God is doing and see that God is actually accomplishing the things God states He will do. A key element in this system is that nothing God decides is decided in secret. That would negate the purpose of the decree.

This pushes against theology of divine, eternal decrees. God does not decree in secret, but to people.