Lumen Gentium §41

⁴¹ The classes and duties of life are many, but holiness is one—that sanctity which is cultivated by all who are moved by the Spirit of God, and who obey the voice of the Father and worship God the Father in spirit and in truth. These people follow the poor Christ, the humble and cross-bearing Christ in order to be worthy of being sharers in His glory. Every person must walk unhesitatingly according to his own personal gifts and duties in the path of living faith, which arouses hope and works through charity. In the first place, the shepherds of Christ's flock must holily and eagerly, humbly and courageously carry out their ministry, in imitation of the eternal high Priest, the Shepherd and Guardian of our souls. They ought to fulfill this duty in such a way that it will be the principal means also of their own sanctification. Those chosen for the fullness of the priesthood are granted the ability of exercising the perfect duty of pastoral charity by the grace of the sacrament of Orders. This perfect duty of pastoral charity is exercised in every form of episcopal care and service, prayer, sacrifice and preaching. By this same sacramental grace, they are given the courage necessary to lay down their lives for their sheep, and the ability of promoting greater holiness in the Church by their daily example, having become a pattern for their flock. Priests, who resemble bishops to a certain degree in their participation of the sacrament of Orders, form the spiritual crown of the bishops. They participate in the grace of their office and they should grow daily in their love of God and their neighbor by the exercise of their office through Christ, the eternal and unique Mediator. They should preserve the bond of priestly communion, and they should abound in every spiritual good and thus present to all men a living witness to God. All this they should do in emulation of those priests who often, down through the course of the centuries, left an outstanding example of the holiness of humble and hidden service. Their praise lives on in the Church of God. By their very office of praying and offering sacrifice for their own people and the entire people of God, they should rise to greater holiness. Keeping in mind what they are doing and imitating what they are handling, these priests, in their apostolic labors, rather than being ensnared by perils and hardships, should rather rise to greater holiness through these perils and hardships. They should ever nourish and strengthen their action from an abundance of contemplation, doing all this for the comfort of the entire Church of God. All priests, and especially those who are called "diocesan priests," due to the special title of their ordination, should keep continually before their minds the fact that their faithful loyalty toward and their generous cooperation with their bishop is of the greatest value in their growth in holiness. Ministers of lesser rank are also sharers in the mission and grace of the Supreme Priest. In the first place among these ministers are deacons, who, in as much as they are dispensers of Christ's mysteries and servants of the Church, should keep themselves free from every vice and stand before men as personifications of goodness and friends of God. Clerics, who are called by the Lord and are set aside as His portion in order to prepare themselves for the various ministerial offices under the watchful eye of spiritual shepherds, are bound to bring their hearts and minds into accord with this special election (which is theirs). They will accomplish this by their constancy in prayer, by their burning love, and by their unremitting recollection of whatever is true, just and of good repute. They will accomplish all this for the glory and honor of God. Besides these already named, there are also laymen, chosen of God and called by the bishop. These laymen spend themselves completely in apostolic labors, working the Lord's field with much success.. Furthermore, married couples and Christian parents should follow their own proper path (to holiness) by faithful love. They should sustain one another in grace throughout the entire length of their lives. They should embue their offspring, lovingly welcomed as God's gift, with Christian doctrine and the evangelical virtues. In this manner, they offer all men the example of unwearying and generous love; in this way they build up the brotherhood of charity; in so doing, they stand as the witnesses and cooperators in the fruitfulness of Holy Mother Church; by such lives, they are a sign and a participation in that very love, with which Christ loved His Bride and for which He delivered Himself up for her. A like example, but one given in a different way, is that offered by widows and single people, who are able to make great contributions toward holiness and apostolic endeavor in the Church. Finally, those who engage in labor—and frequently it is of a heavy nature—should better themselves by their human labors. They should be of aid to their fellow citizens. They should raise all of society, and even creation itself, to a better mode of existence. Indeed, they should imitate by their lively charity, in their joyous hope and by their voluntary sharing of each others' burdens, the very Christ who plied His hands with carpenter's tools and Who in union with His Father, is continually working for the salvation of all men. In this, then, their daily work they should climb to the heights of holiness and apostolic activity. May all those who are weighed down with poverty, infirmity and sickness, as well as those who must bear various hardships or who suffer persecution for justice sake—may they all know they are united with the suffering Christ in a special way for the salvation of the world. The Lord called them blessed in His Gospel and they are those whom "the God of all graces, who has called us unto His eternal glory in Christ Jesus, will Himself, after we have suffered a little while, perfect, strengthen and establish". Finally all Christ's faithful, whatever be the conditions, duties and circumstances of their lives—and indeed through all these, will daily increase in holiness, if they receive all things with faith from the hand of their heavenly Father and if they cooperate with the divine will. In this temporal service, they will manifest to all men the love with which God loved the world.