He worked for seventeen years as a parish priest, and when he arrived as curate in the parish of Tombolo he worked tirelessly amongst the people, especially the poor, organizing evening courses to bring a higher level of education to the parish, as well as training the parishioners in the singing of Gregorian chant, all in the context of his sacramental ministry. His pastor, Fr. Constantini, wrote of young Fr. Sarto: "They have sent me as curate a young priest, with orders to mould him to the duties of pastor; in fact, however, the contrary is true. He is so zealous, so full of good sense, and other precious gifts that it is I who can learn much from him. Some day or other he will wear the mitre, of that I am sure. After that—who knows?"
He was obviously marked for great things. He was appointed as bishop of a small diocese, and in 1892 was advanced to the metropolitan see of Venice with the honorary title of patriarch. On August 4, 1903, he was elected Pope, "a man of God who knew the unhappiness of the world and the hardships of life, and in the greatness of his heart wanted to comfort everybody.
The primary aim of his pontificate Pius X announced in his first encyclical letter, which was "to renew all things in Christ." To accomplish this, he encouraged early and frequent reception of Holy Communion; he called for a renewal and improvement of church music; he encouraged daily Bible reading and the establishment of various Biblical institutes. He is known for his very strong stand against Modernism, which he called the "synthesis of all heresies." All these were means toward the realization of his main objective of renewing all things in Christ.
The outbreak of the first World War, practically on the date of the eleventh anniversary of his election to the See of Peter, was the blow that occasioned his death. Bronchitis developed within a few days, and on August 20, 1914, St. Pius X succumbed to "the last affliction that the Lord will visit on me." He had said in his will, "I was born poor, I have lived poor, I wish to die poor" — and no one questioned the truth of his words. He was one of those chosen few men whose personality is irresistible. Everyone was moved by his simplicity and his kindness. Yet it was something more that carried him into all hearts: and that 'something' is best defined by saying that all who were ever admitted to his presence had a deep conviction of being face to face with a saint.
O God, who for the defence of the Catholic faith, and the restoring of all things in Christ, didst fill thy Supreme Pontiff, Saint Pius the Tenth, with heavenly wisdom and apostolic fortitude: graciously grant that, following his teaching and example, we may attain unto eternal rewards; through Jesus Christ thy Son our Lord, who liveth and reigneth with thee, in the unity of the Holy Spirit, ever one God, world without end. Amen.