Acts 1:4-8

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?” But He said to them, “It is not for you to know periods of time or appointed times which the Father has set by His own authority; 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 as far as the remotest part of the earth.”