Acts 1:8,acts 2:4,acts 2:17

1 Corinthians 12:10 NIV
to another miraculous powers, to another prophecy, to another distinguishing between spirits, to another speaking in different kinds of tongues, and to still another the interpretation of tongues.

1 Corinthians 14:21-23 NIV
In the Law it is written: “With other tongues and through the lips of foreigners I will speak to this people, but even then they will not listen to me, says the Lord.” Tongues, then, are a sign, not for believers but for unbelievers; prophecy, however, is not for unbelievers but for believers. So if the whole church comes together and everyone speaks in tongues, and inquirers or unbelievers come in, will they not say that you are out of your mind?

Acts 1:22 NIV
beginning from John’s baptism to the time when Jesus was taken up from us. For one of these must become a witness with us of his resurrection.”

Acts 1:5 NIV
For John baptized with water, but in a few days you will be baptized with the Holy Spirit.”

Acts 10:38-41 NIV
how God anointed Jesus of Nazareth with the Holy Spirit and power, and how he went around doing good and healing all who were under the power of the devil, because God was with him. “We are witnesses of everything he did in the country of the Jews and in Jerusalem. They killed him by hanging him on a cross, but God raised him from the dead on the third day and caused him to be seen. He was not seen by all the people, but by witnesses whom God had already chosen—by us who ate and drank with him after he rose from the dead.

Acts 10:45 NIV
The circumcised believers who had come with Peter were astonished that the gift of the Holy Spirit had been poured out even on Gentiles.

Acts 13:31 NIV
and for many days he was seen by those who had traveled with him from Galilee to Jerusalem. They are now his witnesses to our people.

Acts 13:52 NIV
And the disciples were filled with joy and with the Holy Spirit.

Acts 2:32 NIV
God has raised this Jesus to life, and we are all witnesses of it.

Acts 22:15 NIV
You will be his witness to all people of what you have seen and heard.