Learn about the history of the baptism  of the Holy Spirit in the Old (selected ones) and New  (all in the body of Christ ) Testamaents and the pentecostal/charismatic movements in present times . Dr R.C. Sproul explains here :

http://www.gty.org/resources/sermons/TM13-3/undervaluing-pentecost-rc-sproul

The baptism of the Holy Spirit  was given to empower  all the believers for ministry and to fulfil the Great Commission.

Some of our readers may not be persuaded that the Baptism of the Holy Spirit is  necessary for all believers – be it as unto you revealed.

Others may not have heard yet knowing there is lacking an empowerment for the ministry – as you yearn for that empowerment let  Him  reveal Himself to you.