The LORD says that His revealing of future events before their occur is proof of who He IS.
3 I declared the past events long ago;
Isaiah 48:3-9
they came out of my mouth; I proclaimed them.
Suddenly I acted, and they occurred.
4 Because I know that you are stubborn,
and your neck is iron[b]
and your forehead bronze,
5 therefore I declared to you long ago.
I announced it to you before it occurred,
so you could not claim, ‘My idol caused them;
my carved image and cast idol control them.’
6 You have heard it. Observe it all.
Will you not acknowledge it?
From now on I will announce new things to you,
hidden things that you have not known.
7 They have been created now, and not long ago;
you have not heard of them before today,
so you could not claim, ‘I already knew them!’
8 You have never heard; you have never known;
for a long time your ears have not been open.
For I knew that you were very treacherous,
and were known as a rebel from birth.
9 I will delay my anger for the sake of my name,
and I will restrain myself for your benefit and for my praise,
so that you will not be destroyed.
There are numerous examples of prophecies of specific events and actions of specific people made decades and centuries before these events happened.