And being assembled together with them, He commanded them not to depart from Jerusalem, but to wait for the Promise of the Father, “which,” He said, “you have heard from Me; 5 for John truly baptized with water, but you shall be baptized with the Holy Spirit not many days from now.” 6 Therefore, when they had come together, they asked Him, saying, “Lord, will You at this time restore the kingdom to Israel?” 7 And He said to them, “It is not for you to know times or seasons which the Father has put in His own authority. 8 But you shall receive power when the Holy Spirit has come upon you; and you shall be witnesses to Me in Jerusalem, and in all Judea and Samaria, and to the end of the earth.” — Acts 1:4-8.
So when they had gathered together, they ask him whether He would restore the kingdom to Israel at this the time. He tells them that they are not permitted to know the times or seasons that the Father has set by His own authority. Instead, they would receive power when the Holy Spirit has come upon them. They would be Jesus’ witnesses in Jerusalem, in all Judea and Samaria, and to the farthest parts of the earth.