On the Catholic Priesthood
Prayer for the Clergy
O God, who willest that Thy priests should be holy and without blemish before Thee; grant unto those whom Thou hast separated from among men in order to serve Thee at Thy holy altar, all sacerdotal virtues. So engrave the priestly character in the souls of those who are about to be admitted to the Sacred Order of Priesthood, that they may never in any way degenerate from their high vocation, but serve Thee in all holiness. Amen.
Source: Apostleship of Prayer, League of the Sacred Heart 1895