The Difference the Holy Spirit makes
Acts 1:7-8 NLT
He replied, "The Father alone has the authority to set those dates and times, and they are not for you to know.  But you will receive power when the Holy Spirit comes upon you. And you will be my witnesses, telling people about me everywhere-in Jerusalem, throughout Judea, in Samaria, and to the ends of the earth."
Acts 2:1-4 NLT
On the day of Pentecost all the believers were meeting together in one place.  Suddenly, there was a sound from heaven like the roaring of a mighty windstorm, and it filled the house where they were sitting.  Then, what looked like flames or tongues of fire appeared and settled on each of them.  And everyone present was filled with the Holy Spirit and began speaking in other languages, as the Holy Spirit gave them this ability.look