the Church is missionary. The word apostle means "one who is sent out."
Confirmation is the sacrament of mission, a commission that comes to us through a successor of the apostles; that is a bishop.
Holy Confirmation is one of the three sacraments of Christian initiation and is the reception of the gift of the Holy Spirit in order to make Christians strong and perfect soldiers of Jesus Christ ( Acts 2:2; 8:15; 10:44,47; 19:1 ). It is Gods love being poured into our hearts through the Holy Spirit who has been given to us ( Rom 5:5; 8:4-16 ) ( Gal 4:4-7 ). This sacrament was instituted by Jesus when he promised to send another Counsellor ( Jn 14:16 ) who will teach the disciples everything ( Jn 14:26 ), who will bear witness to Jesus and enable them to bear witness ( Jn 15:26 ) and who will empower the disciples to speak for he will tell them what to say ( Jn 16:13 ). As the two Apostles Peter and John communicated the Holy Spirit with a laying on of hands confirming disciples recently baptized by Philip, so we also mature in faith and are strengthened to witnesses boldly to Christ's resurrection and its redemptive powers ( Eph 6:18-20 ) ( Acts 1:8; 8:14-17 ).
Grace, a Supernatural Gift
Strengthens us as Soldiers of Jesus Christ
In a World of Spiritual Warfare
Through the outward sign of Holy Confirmation we receive the inward gift of grace and in some sense participate in divine nature ( Acts 19:6 ) ( Col 3:10 ). This grace strengthens us in service to the Christian faith as we journey in a world in which there is spiritual warfare ( Eph 6:10-18 ). Confirmation produces in the soul an indelible spiritual mark or character; sanctifying us, and unites us to Christ and to his church; the mystical Body of Christ. Confirmation is the second step on our stairway to Heaven. It is the normative route God provides for us His creatures for we are not orphans left desolate. He will come to us ( Jn 14:18 ).
Hopefully, on our last day, we will be able to say as Saint Paul says, "I have fought the good fight, I have finished the race, I have kept the faith" ( 2 Tim 4:7 ) ( Mt 10:22; 24:13 ).