50. The spiritual formation of one who is called to live celibacy should pay particular attention to preparing the future priest so that he may know, appreciate, love and live celibacy according to its true nature and according to its real purposes, that is, for evangelical, spiritual and pastoral motives. The virtue of chastity is a premise for this preparation and is its content. It colors all human relations and leads "to experiencing and showing...a sincere, human, fraternal and personal love, one that is capable of sacrifice, following Christ's example, a love for all and for each person."( ¹⁵¹)

The celibacy of priests brings with it certain characteristics thanks to which they "renounce marriage for the sake of the kingdom of heaven (cf. Mt. 19:12) and hold fast to their Lord with that undivided love which is profoundly in harmony with the new covenant; they bear witness to the resurrection in a future life (cf. Lk. 20:36) and obtain the most useful assistance toward the constant exercise of that perfect charity by which they can become all things to all men in their priestly ministry."( ¹⁵²) And so priestly celibacy should not be considered just as a legal norm or as a totally external condition for admission to ordination, but rather as a value that is profoundly connected with ordination, whereby a man takes on the likeness of Jesus Christ, the good shepherd and spouse of the Church, and therefore as a choice of a greater and undivided love for Christ and his Church, as a full and joyful availability in his heart for the pastoral ministry. Celibacy is to be considered as a special grace, as a gift, for "not all men can receive this saying, but only those to whom it is given" (Mt. 1911). Certainly it is a grace which does not dispense with, but counts most definitely on, a conscious and free response on the part of the receiver. This charism of the Spirit also brings with it the grace for the receiver to remain faithful to it for all his life and be able to carry out generously and joyfully its concomitant commitments. Formation in priestly celibacy should also include helping people to be aware of the "precious gift of God,"( ¹⁵³) which will lead to prayer and to vigilance in guarding the gift from anything which could put it under threat.

Through his celibate life, the priest will be able to fulfill better his ministry on behalf of the People of God. In particular, as he witnesses to the evangelical value of virginity, he will be able to aid Christian spouses to live fully the "great sacrament" of the love of Christ the bridegroom for his spouse the Church, just as his own faithfulness to celibacy will help them to be faithful to each other as husband and wife.( ¹⁵⁴)

The importance of a careful preparation for priestly celibacy, especially in the social and cultural situations that we see today, led the synod fathers to make a series of requests which have a permanent value, as the wisdom of our mother the Church confirms. I authoritatively set them down again as criteria to be followed in formation for chastity in celibacy: "Let the bishops together with the rectors and spiritual directors of the seminaries establish principles, offer criteria and give assistance for discernment in this matter. Of the greatest importance for formation for chastity in celibacy are the bishop's concern and fraternal life among priests. In the seminary, that is, in the program of formation, celibacy should be presented clearly, without any ambiguities and in a positive fashion. The seminarian should have a sufficient degree of psychological and sexual maturity as well as an assiduous and authentic life of prayer, and he should put himself under the direction of a spiritual father. The spiritual director should help the seminarian so that he himself reaches a mature and free decision, which is built on esteem for priestly friendship and self - discipline, as well as on the acceptance of solitude and on a physically and psychologically sound personal state. Therefore, seminarians should have a good knowledge of the teaching of the Second Vatican Council, of the encyclical Sacerdotalis Coelibatus and the Instruction for Formation in Priestly Celibacy published by the Congregation for Catholic Education in 1974. In order that the seminarian may be able to embrace priestly celibacy for the kingdom of heaven with a free decision, he needs to know the Christian and truly human nature and purpose of sexuality in marriage and in celibacy. It is necessary also to instruct and educate the lay faithful regarding the evangelical, spiritual and pastoral reasons proper to priestly celibacy so that they will help priests with their friendship, understanding and cooperation."( ¹⁵⁵)