What passage mentions the Spirit giving believers the power to be witnesses?

Acts 1:8 is significant because it specifically highlights the role of the Holy Spirit in empowering believers to act as witnesses. The verse states that when the Holy Spirit comes upon them, they will receive power and be able to testify about Jesus in Jerusalem, Judea, Samaria, and to the ends of the earth. This emphasizes the transformative impact of the Holy Spirit in equipping believers for their mission of spreading the message of Christ.

The other passages mentioned do not focus on this theme. Acts 2:42 discusses the early church's practices, Acts 4:32 describes the unity among believers, and Acts 16:6-7 recounts the experiences of Paul and his companions in their missionary journey but does not specifically mention witnessing through the empowerment of the Holy Spirit. Thus, Acts 1:8 stands out for its clear articulation of the Spirit's role in enabling believers to witness.