From Pope St. John Paul II’s encyclical Veritatis Splendor (1993):
The discernment which the Church carries out with regard to these [teleological] ethical theories is not simply limited to denouncing and refuting them. In a positive way, the Church seeks, with great love, to help all the faithful to form a moral conscience which will make judgments and lead to decisions in accordance with the truth, following the exhortation of the Apostle Paul: “Do not be conformed to this world but be transformed by the renewal of your mind, that you may prove what is the will of God, what is good and acceptable and perfect” (Rom 12:2). This effort by the Church finds its support — the “secret” of its educative power — not so much in doctrinal statements and pastoral appeals to vigilance, as in constantly looking to the Lord Jesus. Each day the Church looks to Christ with unfailing love, fully aware that the true and final answer to the problem of morality lies in him alone. In a particular way, it is in the Crucified Christ that the Church finds the answer to the question troubling so many people today: how can obedience to universal and unchanging moral norms respect the uniqueness and individuality of the person, and not represent a threat to his freedom and dignity? The Church makes her own the Apostle Paul’s awareness of the mission he had received: “Christ . . . sent me . . . to preach the Gospel, and not with eloquent wisdom, lest the cross of Christ be emptied of its power . . . . We preach Christ crucified, a stumbling block to Jews and folly to Gentiles, but to those who are called, both Jews and Greeks, Christ the power of God and the wisdom of God” (1 Cor 1:17, 23-24). The Crucified Christ reveals the authentic meaning of freedom; he lives it fully in the total gift of himself and calls his disciples to share in his freedom.
— Veritatis Splendor 85