Thematic Bible: When you will receive power

When they therefore were come together, they asked of him, saying, Lord, will you at this time restore again the kingdom to Israel? And he said unto them, It is not for you to know the times or the seasons, which the Father has put in his own power. But you shall receive power, after the Holy Spirit has come upon you: and you shall be witnesses unto me both in Jerusalem, and in all Judea, and in Samaria, and unto the uttermost part of the earth.