Acts 1:8 NKJV

Acts 1:22 NKJV
beginning from the baptism of John to that day when He was taken up from us, one of these must become a witness with us of His resurrection.”

Acts 1:5 NKJV
for John truly baptized with water, but you shall be baptized with the Holy Spirit not many days from now.”

Acts 10:38-41 NKJV
how God anointed Jesus of Nazareth with the Holy Spirit and with power, who went about doing good and healing all who were oppressed by the devil, for God was with Him. And we are witnesses of all things which He did both in the land of the Jews and in Jerusalem, whom they killed by hanging on a tree. Him God raised up on the third day, and showed Him openly, not to all the people, but to witnesses chosen before by God, even to us who ate and drank with Him after He arose from the dead.

Acts 13:31 NKJV
He was seen for many days by those who came up with Him from Galilee to Jerusalem, who are His witnesses to the people.

Acts 2:1-4 NKJV
When the Day of Pentecost had fully come, they were all with one accord in one place. And suddenly there came a sound from heaven, as of a rushing mighty wind, and it filled the whole house where they were sitting. Then there appeared to them divided tongues, as of fire, and one sat upon each of them. And they were all filled with the Holy Spirit and began to speak with other tongues, as the Spirit gave them utterance.

Acts 2:32 NKJV
This Jesus God has raised up, of which we are all witnesses.

Acts 22:15 NKJV
For you will be His witness to all men of what you have seen and heard.

Acts 3:15 NKJV
and killed the Prince of life, whom God raised from the dead, of which we are witnesses.

Acts 4:33 NKJV
And with great power the apostles gave witness to the resurrection of the Lord Jesus. And great grace was upon them all.

Acts 5:32 NKJV
And we are His witnesses to these things, and so also is the Holy Spirit whom God has given to those who obey Him.”