428–429 · Augustine of Hippo, On the Gift of Perseverance (De dono perseverantiae) 16.47
These gifts, therefore, of God, which are given to the elect who are called according to God’s purpose, among which gifts is both the beginning of belief and perseverance in the faith to the termination of this life, as I have proved by such a concurrent testimony of reasons and authorities,—these gifts of God, I say, if there is no such predestination as I am maintaining, are not foreknown by God. But they are foreknown. This, therefore, is the predestination which I maintain. [XVIII.] Consequently sometimes the same predestination is signified also under the name of foreknowledge; as says the apostle, “God has not rejected His people whom He foreknew.” Here, when he says, “He foreknew,” the sense is not rightly understood except as “He predestinated,” as is shown by the context of the passage itself.