Acts 1:2; Acts 1:8

Acts 1:2

2 until the day when He was taken up to heaven, after He had by the Holy Spirit given orders to the apostles whom He had chosen.

Acts 1:8

8 but you will receive power when the Holy Spirit has come upon you; and you shall be My witnesses both in Jerusalem, and in all Judea and Samaria, and even to the remotest part of the earth."