It Is God, The Thrice Holy Who Makes Us Saints

Can I do so with my own strength? The answer is clear: A holy life is not primarily the fruit of our own effort, of our actions, because it is God, the thrice Holy (cf. Isaiah 6:3), who makes us saints, and the action of the Holy Spirit who encourages us from within; it is the life itself of the Risen Christ, which ... transforms us. - Pope Benedict XVI