This sermon on Matthew 5:8, "Blessed are the pure in heart, for they shall see God," unpacks the sixth Beatitude by examining the biblical meaning of the heart, the nature of purity, and how these relate to sanctification. It confronts common misunderstandings such as sinless perfectionism, external religiosity, and emotional or intellectual-only views of faith. Through a rich study of Scripture, it shows that purity of heart is a sovereign work of God through regeneration, evidenced in sincere repentance, a life of integrity, and a continual pursuit of holiness. Only the pure in heart—those transformed by the Holy Spirit—will truly behold God, both now by faith and fully in glory.