The great wonders of the priesthood of Christ, who offered Himself, once for all, for the forgiveness of sins; and who now intercedes for us before the Father; and who will return to bring us with Him: those are the three stages of the priesthood of Christ highlighted by Pope Francis during his homily at the morning Mass at the Casa Santa Marta. The Pope also warned of the “unforgivable blasphemy”: blasphemy against the Holy Spirit.