A dad was leaving church. He forgot to bless himself with holy water. His son tugged at him and said, "Daddy, you forgot to punch out." We can forget the Sign of the Cross and its meaning. In the Gospel, Jesus, at the Last Supper, wants to strengthen his apostles who will be shaken by his passion. "Everything that the Father has is mine," Jesus says, and he promises the Holy Spirit. Here he speaks of three Persons in one God – the doctrine of the Trinity: The Father, Son, and Holy Spirit will be with the apostles and the Church, always.
God is not an impersonal power, but a loving community of three Persons. The Father knows himself from all eternity with a knowledge so perfect that it is a Person, the Son. The Father and Son love each other with a love so perfect that it is a Person, the Holy Spirit.
We are made in God’s image. That’s why we hunger for knowledge and love. We’ll find meaning and happiness when we recognize God’s knowledge and love all around us. For example, we’ll enjoy a sunset more if we see it as a gift from God our Father. Marriage can bring great happiness when the couple realizes that Jesus is with them, making their marriage a sign of his love for the Church. We’ll do better in our relationships, work, and recreation if we realize that the Holy Spirit is our Helper.