In the Church's liturgy, the divine blessing is fully revealed and communicated. the Father is acknowledged and adored as the source and the end of all the blessings of creation and salvation. In his Word who became incarnate, died, and rose for us, he fills us with his blessings. Through His Word, he pours into our hearts the Gift that contains all gifts, the Holy Spirit. CCC 1082
The sacramental economy consists in the communication of the fruits of Christ’s redemption through the celebration of the sacraments of the Church, most especially that of the Eucharist, “until he comes” (1 Cor 11:26). (#220)
Since Pentecost, we have been living in "the age of the Church" through which the liturgy plays a significant role as a result. As the Catechism Companion, Vol II notes:
The sacramental economy is recognized in both the Eastern and Western traditions of the Church. We see the many liturgical expressions and rites within the Catholic Church... Jesus continues to come to us to sanctify, redeem, heal, and forgive us as he feeds us through his sacraments. (p. 56)
The Father is the source of all blessings, including those through the Son and the gifts of the Holy Spirit. I do like how the Compendium summarizes the Church's understanding of this as far as the liturgy goes:
Through the liturgy, the Father fills us with his blessings in the Word made flesh who died and rose for us and pours into our hearts the Holy Spirit. At the same time, the Church blesses the Father by her worship, praise, and thanksgiving and begs him for the gift of his Son and the Holy Spirit. (#221)