Acts 1:8

1:8 But you will receive power when the Holy Spirit has come upon you, and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the farthest parts of the earth.”

Acts 5:20

5:20 “Go and stand in the temple courts and proclaim to the people all the words of this life.”

Luke 24:46-48

24:46 and said to them, “Thus it stands written that the Christ would suffer and would rise from the dead on the third day, 24:47 and repentance for the forgiveness of sins would be proclaimed in his name to all nations, beginning from Jerusalem. 24:48 You are witnesses of these things.