John Gill discusses Tertullian's contributions to the understanding of predestination, emphasizing his insights into the doctrines of election and reprobation. Tertullian, an early Christian writer from Carthage, highlights the importance of the church as the body of Christ and the necessity of distinguishing between the elect and the reprobate. He suggests that God's judgment involves both salvation and punishment, and that election cannot exist without reprobation. Despite some ambiguity in Tertullian's writings regarding the role of human works in election, Gill clarifies that these should be understood within the broader context of divine providence. Ultimately, Tertullian's reflections invite deeper contemplation on the nature of faith and God's sovereignty.