I was confirmed in seventh grade. In religion class, I learned that in the Sacrament of Confirmation we receive the Holy Spirit who strengthens us to be Christian witnesses. I worried whether I could witness to Christ by dying for him as a martyr. I took Confirmation seriously.
The Church received the Holy Spirit at Pentecost. To prepare to receive the Spirit, for nine days key followers of Jesus gathered in the Upper Room in Jerusalem. These included the apostles, together with Mary, some other women, and disciples. They were united in intense prayer.
In Acts 2:2-4, it says, “Suddenly there came from the sky, a noise like a strong driving wind, and it filled the entire house in which they were. Tongues as of fire appeared to them, which parted and came to rest on each one of them. And they were all filled with the Holy Spirit and began to speak in different tongues, as the Spirit enabled them to proclaim.”