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. – Acts 1:11

Nothing is mentioned between His ascent and His descent. True, a rich history comes between; but it lies in a valley between two stupendous mountains: we step from alp to alp as we journey in meditation from the ascension to the second advent…”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.” The angels showed their knowledge of them by calling them “men of Galilee,” and reminded them that they were yet upon earth by recalling their place of birth. Brought back to their senses, their reverie over, the apostles at once gird up their loins for active service; they do not need twice telling, but hasten to Jerusalem. The vision of angels has singularly enough brought them back into the world of actual life again, and they obey the command, “Tarry ye at Jerusalem.” They seem to say, “The taking up of our Master is not a thing to weep about: He has gone to His throne and to His glory, and He said it was expedient for us that He should go away. He will now send us the promise of the Father; we scarcely know what it will be like, but let us, in obedience to His will, make the best of our way to the place where He bade us await the gift of power.”

Do what Jesus has given you the power to do, and then ye will not stand gazing up into heaven, but you will wait upon the Lord in prayer, and you will receive the Spirit of God, and you will publish to all around the doctrine of “Believe and live.” Then when He comes He will say to you, “Well done, good and faithful servant, enter thou into the joy of thy Lord.” So may His grace enable us to do. Amen. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1817.cfm