Acts 1:9-11 (KJV):

    9And when he had spoken these things, while they beheld, he was taken up; and a cloud received him out of their sight.
    10And while they looked steadfastly toward heaven as he went up, behold, two men stood by them in white apparel;
    11Which also said,  Ye men of Galilee, why stand ye gazing up into heaven? this same Jesus, which is taken up from you into heaven, shall so come in like manner as ye have seen him go into heaven.