The Acts 1:6-11

They therefore, being come together, asked him saying, Lord, is it at this time that thou restorest the kingdom to Israel? And he said to them, It is not yours to know times or seasons, which the Father has placed in his own authority; but 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. And having said these things he was taken up, they beholding him, and a cloud received him out of their sight. And as they were gazing into heaven, as he was going, behold, also two men stood by them in white clothing, who also said, Men of Galilee, why do ye stand looking into heaven? This Jesus who has been taken up from you into heaven, shall thus come in the manner in which ye have beheld him going into heaven.