The first appeal is for conversion, a word to be understood with its extraordinary gravity, grasping the surprising newness it releases. The appeal to conversion, in fact, lays bare and denounces the facile superficiality that all too often marks our lives. To repent [or convert] is to change direction in the journey of life: not, however, by means of a small adjustment, but with a true and proper about turn. Conversion means swimming against the tide, where the "tide" is the superficial lifestyle, inconsistent and deceptive, that often sweeps us long, overwhelms us and makes us slaves to evil or at any rate prisoners of moral mediocrity. With conversion, on the other hand, we are aiming for the high standard of Christian living, we entrust ourselves to the living and personal Gospel which is Jesus Christ. He is our final goal and the profound meaning of conversion, he is the path on which all are called to walk through life, letting themselves be illumined by his light and sustained by his power which moves our steps. In this way conversion expresses his most splendid and fascinating Face: it is not a mere moral decision that rectifies our conduct in life, but rather a choice of faith that wholly involves us in close communion with Jesus as a real and living Person. To repent and believe in the Gospel are not two different things or in some way only juxtaposed, but express the same reality. Repentance is the total "yes" of those who consign their whole life to the Gospel responding freely to Christ who first offers himself to humankind as the Way, the Truth and the Life, as the only One who sets us free and saves us. This is the precise meaning of the first words with which, according to the Evangelist Mark, Jesus begins preaching the "Gospel of God": "The time is fulfilled, and the Kingdom of God is at hand; repent, and believe in the Gospel" (Mk 1: 15).
The "Repent, and believe in the Gospel" is not only at the beginning of Christian life but accompanies it throughout, endures, is renewed and spreads, branching out into all its expressions. Every day is a favourable moment of grace because every day presses us to give ourselves to Jesus, to trust in him, to abide in him, to share his lifestyle, to learn true love from him, to follow him in the daily fulfilment of the Father's will, the one great law of life. Every day, even when it is fraught with difficulties and toil, weariness and setbacks, even when we are tempted to leave the path of the following of Christ and withdraw into ourselves, into our selfishness, without realizing our need to open ourselves to the love of God in Christ, to live the same logic of justice and love.
[Pope Benedict, General Audience 17 February 2010]