Acts 1:12 (KJV)

And while they looked stedfastly toward heaven as he went up, behold, two men stood by them in white apparel;

Which 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.

Then returned they unto Jerusalem from the mount called Olivet, which is from Jerusalem a sabbath day’s journey.

And when they were come in, they went up into an upper room, where abode both Peter, and James, and John, and Andrew, Philip, and Thomas, Bartholomew, and Matthew, James the son of Alpheus, and Simon Zelotes, and Judas the brother of James.

These all continued with one accord in prayer and supplication, with the women, and Mary the mother of Jesus, and with his brethren.