There was a significant change in the apostles’ understanding of the kingdom of God between Acts chapter one and chapter three – before and after the outpouring of the Holy Spirit.
Acts 1:6 – “Will You at this time restore the kingdom to Israel?”
Yeshua taught His disciples much about the kingdom of God after His resurrection (Acts 1:3). That vision was based in Israel and extended to the nations. Apparently the disciples heard the Israel part but missed the International part. That is why Yeshua told His disciples that they should be witness of Him “from Jerusalem, Judea and Samaria, and to the ends of the earth” – Acts 1:8.