Quote from "Knowing God"

"[God] shows his freedom and lordship by discriminating between sinners, causing some to hear the gospel while others do not hear it, and moving some of those who hear it to repentance while leaving others in their unbelief, thus teaching his saints that he owes mercy to none and that it is entirely of his grace, not at all through their own effort, that they themselves have found life." - J.I. Packer, Knowing God