Mark 7:31-37
Again Jesus left the district of Tyre
and went by way of Sidon to the Sea of Galilee,
into the district of the Decapolis.
And people brought to him a deaf man who had a speech impediment
and begged him to lay his hand on him.
He took him off by himself away from the crowd.
He put his finger into the man’s ears
and, spitting, touched his tongue;
then he looked up to heaven and groaned, and said to him,
“Ephphatha!”— that is, “Be opened!” —
And immediately the man’s ears were opened,
his speech impediment was removed,
and he spoke plainly.
He ordered them not to tell anyone.
But the more he ordered them not to,
the more they proclaimed it.
They were exceedingly astonished and they said,
“He has done all things well.
He makes the deaf hear and the mute speak.”
From the Catechism of the Catholic Church:
1116 Sacraments are "powers that comes forth" from the Body of Christ,33 which is ever-living and life-giving. They are actions of the Holy Spirit at work in his Body, the Church. They are "the masterworks of God" in the new and everlasting covenant.
1131 The sacraments are efficacious signs of grace, instituted by Christ and entrusted to the Church, by which divine life is dispensed to us. The visible rites by which the sacraments are celebrated signify and make present the graces proper to each sacrament. They bear fruit in those who receive them with the required dispositions
1133 The Holy Spirit prepares the faithful for the sacraments by the Word of God and the faith which welcomes that word in well-disposed hearts. Thus the sacraments strengthen faith and express it.