If you wish to read the texts click here: Eph 1:15-23; Lk 12:8-12
The sin against the Holy Spirit that Jesus speaks about in the Gospel reading of today does not refer to a particular sin or action. It is not an impulsive, momentary rejection of Jesus, such as Peter’s denial of Jesus in the courtyard, but a persistent, obdurate rejection of God’s saving grace through the work of the Holy Spirit. It is, in other words dependence only on self and not on God.
Today the sin against the Holy Spirit is to no longer believe that the Holy Spirit can transform me. It is to give up before one can begin. It is to give in to despair and to lose hope. It is not to make a resolution for fear of breaking that resolution. It is not to trust, not to hope and not to believe.