There is, indeed, only one thing that unites man to God, one thing that makes him pleasing to God and a not unworthy dispenser of his mercy; and that one thing is holiness of life and conduct. If this holiness, which is the true supereminent knowledge of Jesus Christ, is wanting in the priest, then everything is wanting. Without this, even the resources of profound learning (which we strive to promote among the clergy), or exceptional competence in practical affairs, though they may bring some benefit to the Church or to individuals, are not infrequently the cause of deplorable damage to them.
On the other hand, there is abundant evidence from every age that even the humblest priest, provided his life has the adornment of overflowing sanctity, can undertake and accomplish marvelous works for the spiritual welfare of the people of God; an outstanding example in recent times is John Baptist Vianney, a model pastor of souls, to whom we are happy to have decreed the honors of the Blessed in heaven.
Sanctity alone makes us what our divine vocation demands, men crucified to the world and to whom the world has been crucified, men walking in newness of life who, in the words of St. Paul, show themselves as ministers of God in labors, in vigils, in fasting, in chastity, in knowledge, in long-suffering, in kindness, in the Holy Spirit, in sincere charity, in the word of truth; men who seek only heavenly things and strive by every means to lead others to them.
~ Pope St. Pius X; excerpt from Haerent Animo ~
Mary, Mother of Jesus Christ, Eternal High Priest, Mother of all priests and our Mother, help us respond generously to the Holy Spirit's request, through the voice of His Church, to offer up to God Eucharistic adoration for priests. Amen.