Acts 1:6-8

6They therefore, being come together, asked him saying, Lord, is it at this time that thou restorest the kingdom to Israel?

7And he said to them, It is not yours to know times or seasons, which the Father has placed in his own authority;

8but ye will receive power, the Holy Spirit having come upon you, and ye shall be my witnesses both in Jerusalem, and in all Judaea and Samaria, and to the end of the earth.