How do we know that God's grace is distinguishing?

The sermon highlights the concept of God's distinguishing grace, which sets apart His chosen people from the rest of humanity. This grace is evident through the stark difference between Judas Iscariot and the other disciples. Judas, despite his privileges and exposure to Jesus' teachings, ultimately rejected Him, illustrating the idea that exposure to truth alone does not save. In contrast, those who believe in Christ do so by the effectual working of God's grace in their hearts, as described in Ephesians 2:4-5, where it notes that God, rich in mercy, saves those who are dead in their trespasses. The grace that enables belief and the transformation of heart is a divine gift, underscoring the necessity of God's sovereign will in salvation.