Atheists, how do you explain the prophecy of the Old Testament?

Like Psalm 22, Isaiah's prophecies of Jesus and Abraham sacrificing the ram that got caught in the THORNS instead of his son.
All these, for me, point to a divine prophecy.

I was wondering, without y'all being sarcastic, what they mean for you and how you'd explain them...

Thanks :]
No Manuel, the Bible was written at different times by different authors.
It was compiled at a later date.