Read the Catechism in a Year image
Read the Catechism in a Year

Catechism in a Year: Day 176

Part Two: How We Celebrate the Christian Mysteries
- Section Two: The Seven Sacraments of the Church
-- Chapter One: The Sacraments of Initiation -- CONFIRMATION
Question 205: What happens in Confirmation?
In Confirmation the soul of a baptized Christian is imprinted with a permanent seal that can be received only once and marks this individual forever as a Christian. The gift of the Holy Spirit is the strength from above in which this individual puts the grace of his Baptism into practice through his life and acts as a “witness” for Christ.
To be confirmed means to make a “covenant” with God. The confirmand says, “Yes, I believe in you, my God; give me your Holy Spirit, so that I might belong entirely to you and never be separated from you and may witness to you throughout my whole life, body and soul, in my words and deeds, on good days and bad.” And God says, “Yes, I believe in you, too, my child—and I will give you my Spirit, my very self. I will belong entirely to you. I will never separate myself from you, in this life or eternally in the next. I will be in your body and your soul, in your words and deeds. Even if you forget me, I will still be there—on good days and bad”. 
Dig Deeper: Corresponding CCC section (1302-1305) and other references here.
Recommended Listening: We Must Go Out: The Sacrament of Confirmation by
Fr. Mike Schmitz