Be zealous, but always with love.
“But in order that the desired fruit may be derived from this apostolate and this zeal for teaching, and that Christ may be formed in all, be it remembered, Venerable Brethren, that no means is more efficacious than charity. ‘For the Lord is not in the earthquake’ (III Kings xix., II) – it is vain to hope to attract souls to God by a bitter zeal. On the contrary, harm is done more often than good by taunting men harshly with their faults, and reproving their vices with asperity. True the Apostle exhorted Timothy: ‘Accuse, beseech, rebuke,’ but he took care to add: ‘with all patience’ (II. Tim.iv., 2). Jesus has certainly left us examples of this. ‘Come to me,’ we find Him saying, ‘come to me all ye that labor and are burdened and I will refresh you’ (Matth. xi., 28). And by those that labor and are burdened he meant only those who are slaves of sin and error. What gentleness was that shown by the Divine Master! What tenderness, what compassion towards all kinds of misery! Isaias has marvelously described His heart in the words: ‘I will set my spirit upon him; he shall not contend, nor cry out; the bruised reed he will not break, he will not extinguish the smoking flax’ (Is. xlii., I, s.). This charity, ‘patient and kind’ (I. Cor. xiii., 4.), will extend itself also to those who are hostile to us and persecute us. ‘We are reviled,’ thus did St. Paul protest, ‘and we bless; we are persecuted and we suffer it; we are blasphemed and we entreat’ (I. Cor., iv., 12, s.).” ~Pope St. Pius X – “E Supremi”
“No sacrifice is more acceptable to God than zeal for souls.” ~Pope St. Gregory the Great
Prayer for the Propagation of Faith and Piety
Eternal Father, by Thy infinite mercy and by the infinite merits of thy divine Son Jesus, make Thyself known and loved by all souls, since it is Thy will that all should be saved. Gloria Patri.
Through the sacred mysteries of human redemption send, O Lord, laborers into thy harvest, and spare Thy people. Eternal Word incarnate, Redeemer of the human race, convert all souls to Thyself, since for them Thou wast obedient even to the death of the Cross. Gloria Patri.
Through the merits and intercession of Thy most holy Mother, and of all the Angels and Saints, send, O Lord, labourers into thy harvest, and spare thy people.
O Holy Spirit of God, by the infinite merits of the Passion and Death of Jesus Christ, diffuse Thy most ardent and all-powerful charity in all hearts, that there may be one Fold and one Shepherd throughout the world, and that all may come to sing thy divine mercies in Heaven for ever. Amen. Gloria Patri.
Queen of Apostles, and all ye Angels and Saints, pray the Lord of the harvest to send laborers into his harvest and spare his people, that we may all rejoice with Him and the Father and the Holy Spirit forever and ever. Amen.
Immaculate Mother of God, Queen of Apostles, I know that the divine precept, by which I am bound to love my neighbor as myself, obliges me to procure by every possible means not only my eternal salvation, but also that of my neighbor. But I confess that through my sins I am not worthy of the grace to labor effectually and constantly for the eternal salvation of my soul and of the souls of my relations and neighbors; much less am I worthy of the grace to promote good works and increase the means, both spiritual and temporal, of restoring Faith and rekindling charity among Catholics, and propagating the truth throughout the world.
Do thou then, O Mother, obtain for me this grace through the mercy of God and the infinite merits of Jesus Christ; and in union with the heavenly court and all the just, who are or will be in the Church of God, from henceforth I intend to offer these same merits of Jesus as a thanksgiving in anticipation of this grace obtained by thee for us and for all, as thou didst obtain it for the holy Apostles.
And so, I, N.N., trusting in thy powerful intercession, resolve from henceforth to use whatever I have from God of power, talents, learning, riches, position, health, sickness or sorrow, for the greater glory of God and the salvation of my soul, and that of my neighbor, more especially by working for the propagation of piety and the holy faith throughout the world. And when all other means to this end fail me, I will never cease to pray, that there may be one Fold and one Shepherd. By so doing I hope to reach paradise, there to enjoy the fruit of the Apostolate of Jesus Christ for all eternity. Amen.
Ave Maria thrice, Gloria Patri once.