Confirmation is the Sacrament of Christian Initiation along with Baptism and The Eucharist. Confirmation seals our life of faith in Jesus. The sacrament by which a fuller measure of the Spirit and his grace is conferred upon a Baptized Christian.
Confirmation was instituted by Christ in his promise to send the Holy Spirit.
"If you love me, you will keep my commandments. And I will ask the Father, and he will give you another advocate to be with you always, the Spirit of truth, which the world cannot accept, because it neither sees nor knows it. But you know it, because it remains with you, and will be in you. I will not leave you orphans; I will come to you. In a little while the world will no longer see me, but you will see me, because I live and you will live. On that day you will realize that I am in my Father and you are in me and I in you. Whoever has my commandments and observes them is the one who loves me. And whoever loves me will be loved by my Father, and I will love him and reveal myself to him." (Jn 14:15-21).