The goal of this paper (written and annotated with the documents of the Magisterium) is to consider the sacrament of reconciliation in some bioethical issues. To reach that goal we will analyse the mystery of sin and the human inclination towards sin and its fount and gradual manifestation that evolves from harmlessness to seriously grave conditions. Placing ourselves in the context of our times, we consider the fact that the man of today is seriously tempted, particularly fragile, and above all, sensitive in the domains of sexuality, which span from the age of childhood to adolescence, betrothal, and matrimony o be of substantial importance. Man's entire life is marked by corporeality and sexuality; thus, it is a grave omission not to speak about it because in those realities the entire splendour of sin and evil is manifested. Diving into the depths of man, we find systems of deceit that, in spite of the repeating patterns, manage to trick him ever anew. Stating that we find ourselves under incessant attacks on man's corporeality and sexuality and that temptations are inescapable, we do not hold ourselves to simply diagnosing the difficulties and man's horrid actions, but we turn ourselves to the Lord, to the one who bestowed our bodies as a gift, who entered our reality, opening to us the perspective of newness and the restoration of relations. In such a way, our light and hope will come from the one who himself is Light, from the one who himself is Hope, who ever anew gives us the opportunity to recognise the truth about ourselves, to confront us with it, to recognise ourselves as weak and sinful, and to cry out for forgiveness. Our gaze is permanently oriented towards God the physician, who reveals our deficiencies but, likewise, gives us solutions for the same.