John Frames Zusammenfassung:
Human beings are free, not in the sense of being undetermined or free of divine control, but in the sense that they are (1) accountable to God, (2) able to act according to their nature and desires, and (3) able to act according to the integrity of their nature as beings distinct from God. Like God, they are able to choose among possible courses of action. Even evil and sin are under God's sovereignty. He controls evil in such a way as to bring from it it greater good, although that greater good is often mysterious to us in the present life.
John Frame. The Doctrine of God. P & R: Philippsburg, 2002. Kapitel 30.