The one thing about liberalism that I find terribly, terribly irritating is that they seem to have this constant, almost dizzying, switch that goes back and forth between materialism and supernaturalism. On the one hand, they take everything "science" says about materialism as if it were the gospel, and then, apparently wherever they feel like, they make assertions about how the will acts, or God's action in the world. It is absolutely dizzying.
There's a constant need to redefine everything from truly spiritual terms to more physical terms - like redefining spirituality as "inner transformation" (note that inner transformation leaves God entirely out of the picture), making all behavior the product of genetics, and other things. And then, somewhere out of the blue, in pops God and free will. But of course, only for a brief moment, and there is no way to discern why we should be thinking in terms of God and free will in those isolated instances when every other association with them has been broken using materialism.