You're reading a theology into the passage that's not there. What does the passage actually say? God has declared the end from the beginning. God has declared how the end is going to turn out, and that end has been declared from the beginning. We now know the end because He has declared it in Scripture.
Hello John, (assuming that you are referring to the theology of God's sovereignty here), while I realize that the theology concerning His "sovereignty" is, at times, stated more directly in other verses/passages than this one (e.g. take note again of the examples from Scripture that I posited at the end of my last post), v10's, "I will establish", tells us that there is far more to God's statement (that He, "declares the end from the beginning") than a simple prophetic vision of how the future will unravel itself by an impotent Onlooker.
As He says in the following verse/same passage,
Isaiah 46
11 Calling a bird of prey from the east,
The man of My purpose from a far country.
Truly I have spoken; truly I will bring it to pass.
I have planned it, surely I will do it.
Yahweh is more than the AWOL deity of Deism, and He is FAR more than a Divine soothsayer, rather, He is the sovereign Lord of all. And while it's clear that He has given us free will, and that He often allows us to act according to its dictates (e.g. sin), our free will is never independent of His purview, foreordination and control.
Nothing in the Universe is, PTL
God bless you!
~Deut
Proverbs 16
33 The lot is cast into the lap, but its every decision is from the LORD.
Ephesians 1
11 We have obtained an inheritance, having been predestined according to His purpose who works all things after the counsel of His will.