The beginnings of Croatian relations with the spiritual and philosophical trends in Europe are still largely unknown to us. However, there is a person from the beginning of Scholastics that might be linked to the Duke Trpimir and the Croats: The Benedictine monk Gottschalk. In the history of philosophy and theology, Gottschalk is interesting because of his teaching concerning predestination, which caused many controversies and philosophical polemics, and which was condemned at Church councils. Eriugena's response and his refutation of Gottschalk's teaching on predestination is the topic of this paper. John Scot Eriugena's treatise De divina praedestatione is a refutation of Gottschalk's heretic doctrine on two predestinations. Eriugena's critique starts from an attempt at defining of the notion of predestination, which has deep and far-reaching theological and philosophical consequences, since Eriugena's concept of a single predestination stems from the concept of God. This whole controversy should be viewed with Augustine's doctrines in mind, as well as his understanding of the relationship between human freedom and God's knowledge of everything in the context of the question of sin and punishment, since both Gottschalk and Eriugena try to demonstrate that their respective teachings concerning predestination are the true interpretations of Augustine. Eriugena's doctrines are based on true reason, the authority of the Holy Fathersin, and the Holy Scriptures, which emphasizes his rationalism. Eriugena differentiates between predestination and pre-knowledge, thus avoiding the duality of predestination found in Gottschalk.