The biblical statement that God made was God knows because He will do it. I want to quote the last verse of the Isaiah passage Isa 46:9-11 “Remember the former things of old, For I am God, and there is no other; I am God, and there is none like Me, 10 Declaring the end from the beginning, and from ancient times things that are not yet done, saying, ‘My counsel shall stand, and I will do all My pleasure,’ 11 Calling a bird of prey from the east, the man who executes My counsel, from a far country. Indeed I have spoken it; I will also bring it to pass. I have purposed it; I will also do it.”
God declares the end from the beginning, because He will bring to pass His eternal purpose.