Acts 1:6 Therefore, when they had come together, they asked Him, saying, "Lord, will You at this time restore the kingdom to Israel?"
Note: Many people will be concerned about the end of the world.
Acts 1:7 And He said to them, "It is not for you to know times or seasons which the Father has put in His own authority."
Note: Christians should not be concerned when the end of the world will be.
Acts 1:8 "But you shall receive power when the Holy Spirit has come upon you; and you shall be My witnesses in Jerusalem, and in Judea and Samaria, and to the end of the earth."
Note: Christians are to be a witness for Jesus Christ in word and deed everywhere.