Acts 2:1-4 (NIV)
1 When the day of Pentecost came, they were all together in one place.
2 Suddenly a sound like the blowing of a violent wind came from heaven and filled the whole house where they were sitting.
3 They saw what seemed to be tongues of fire that separated and came to rest on each of them.
4 All of them were filled with the Holy Spirit and began to speak in other tongues as the Spirit enabled them.

John 14:12-14 (NIV)
12 Very truly I tell you, whoever believes in me will do the works I have been doing, and they will do even greater things than these, because I am going to the Father.
13 And I will do whatever you ask in my name, so that the Father may be glorified in the Son.
14 You may ask me for anything in my name, and I will do it.

Luke 4:14 (NIV)
14 Jesus returned to Galilee in the power of the Spirit, and news about him spread through the whole countryside.