Acts 1:2-6

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

To these He also presented Himself alive after His suffering, by many convincing proofs, appearing to them over a period of forty days and speaking of things regarding the kingdom of God.

Gathering them together, He commanded them not to leave Jerusalem, but to wait for what the Father had promised, “Which,” He said, “you heard of from Me;

for John baptized with water, but you will be baptized with the Holy Spirit not many days from now.”

So, when they had come together, they began asking Him, saying, “Lord, is it at this time that You are restoring the kingdom to Israel?”