Why does The Omnipotent and Omniscient GOD give us freedom

So during discussion of the book "Think Like Jesus" tonight in Bible study I was bought back to a passage of the book"The Jesus I Never knew" by Philip Yancey section Showdown in the desert which the author says "Do we humans enjoy too much freedom? We have the freedom to harm and kill each other, to fight global wars, to despoil our planet. We are even free to defy God." So in an attempt to "Think Like Jesus" why didn't The Omnipotent and Omniscient GOD just use some irrefutable proof to silence all skeptics, tilting the odds in His favor?