Here’s the best, and shortest, analysis of personal volition, or free will, that I’ve ever seen. Go, Uncle Jack:
The sin, both of men and of angels, was rendered possible by the fact that God gave them free will: this surrendering a portion of His omnipotence (it is again a deathlike or descending movement) because He saw that from a world of free creatures, even though they fell, He could work out (and this is the re-ascent) a deeper happiness and a fuller splendour than any world of automata would admit.
Truth be told, and to the irritation of both sides of the divine sovereignty issue, the Bible clearly spells out both God’s absolute sovereignty, and man’s personal volition. “How can that be?” you ask. It’s easy if you’re God. Just don’t limit God to your ability to understand His Truth. Ever!