What Is The Purpose Of The Charismatic Renewal?
The purpose of the renewal centers around the renewal of one’s individual commitment to Jesus Christ through the empowerment of the Holy Spirit (Baptism in the Spirit). 
Although modern day Christians were not there at that first Pentecost, that does not mean that they were left out of the abundant graces of the Spirit’s coming.  Each Christian receives the Father, Son, and Holy Spirit at sacramental Baptism.  In a real sense each one was baptized into the Holy Spirit.  The Sacrament of Confirmation is also meant to be a personal Pentecost.  Yet if someone were to ask, “Have you received the Holy Spirit fully?” what would the answer be.  Would that answer indicate that one has accepted the same Spirit of self-surrender and power that is most evident in the disciple’s lives after the Pentecostal experience? 
The fire of the Holy Spirit within us can be a tiny ember or a glowing sun.  Being baptized in the Spirit is not a new sacrament, but the releasing of the Spirit already there through the sacraments and is the quickening of an earlier faith.  Even if our own immersion into the river of God’s life seemed to be a remote and sentimental moment in infancy, we now possess the key to a vital Christian life that revolves around the sending of the Spirit.  With this key we can be like Saint Peter, who was transformed from one who denied Jesus during His passion to one boldly proclaiming Him on Pentecost Sunday.  The Spirit’s power always transforms our lives and blesses us with an abundance of gifts to help us find joy and peace in our lives & to evangelize others.
Baptism in the Spirit is often a conscious experience of the power of the Spirit already received. God offers us a new inner awareness that activates what is already deep within us, giving our spiritual lives a totally new dimension.  It is as if we were familiar with God and even His voice before, but now having been Baptized in the Spirit we hear God sing loudly in our hearts.  The release of the Spirit is the release of the Third Person of the Trinity who was previously all cramped up in a in a space in our souls while the surrender to the Father, Son, and Holy Spirit becomes a more conscious part of our identity.  Something new has broken forth within us, transforming the substance of what was there into something fresh and vibrant.  The Spirit thus gives new life.