there can be no authentic understanding of Christian revelation apart from the activity of the Paraclete. This is due to the fact that God’s self-communication always involves the relationship of the Son and the Holy Spirit, whom Irenaeus of Lyons refers to as “the two hands of the Father”.[47] Sacred Scripture itself speaks of the presence of the Holy Spirit in salvation history and particularly in the life of Jesus: he was conceived of the Virgin Mary by the power of the Holy Spirit (cf. Mt 1:18;