"But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto Me..." Acts 1:8.  There can only be one explanation for the transformation that took place in the disciples after Pentecost - boldly witnessing, powerfully preaching the Gospel, doing mighty works, and fearlessly facing persecution and death - the baptism of the Holy Spirit!  Explore the difference that speaking in tongues makes on a believer's life, and get ready for a greater outpouring of His power to be an effective witness for Christ. (Price includes shipping)