Fruit of the tree of knowledge of Good and Evil.
Original Sin is the first time we used our Free Will to defy God's Wisdom.
He seemed surprised and appalled.
Pretty good case for Free Will.
Determinism is a pretty dangerous way to think if you're not a super convinced believer of God… it's the path of nihilism, futility, depression, hedonism, etc.
Why even have a book teaching you how to act if it's all ultimately playing out just how God wants it?
All the meaning in your life comes from your choices… determinism robs us of everything other than hoping we are one of the lucky predestined.
That comic nails it… if you have a God's-Eye view of the world then sure, deterministic, but you don't.
People use determinism to rationalize their sins, their bad works, their laziness and reticence.
Free Will is God's greatest gift to man.