St. John the Theologian is at one and the same time the Church's most profound theologian and Her most simple and loving pastor. St. John's Gospel soars to the heights in revealing profound Trinitarian theology. St. John's Apocalypse pulls back the curtain on eschatological mysteries. And the Epistles of St. John reveal the Holy Apostle's burning heart of love for the flock, and his solid and practical counsel to believers on how to live for the Lord. These letters move between the dual affirmations of divinity that "God is light" and "God is love", and call upon the people of God to embrace holiness and love as the distinguishing marks of Christian believers.