Acts 1:9-11 And when he had spoken these things, while they beheld, he was taken up; and a cloud received him out of their sight. 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.
How did Jesus go up? The verse does not say that the disciples saw a body go up.
The disciples were staring up into the sky as the spirit of Jesus was taken up to heaven out of their sight. The two men dressed in white (angels) came along and asked why they were staring up into the sky because they wondered why the disciples were staring up into the sky. Then the angels told the disciples that the same spirit of Jesus that was taken up to heaven will return just as it went to heaven, in like manner.
It was the Christ Spirit that ascended, not a body, which is why the angels wondered why the disciples were staring into the sky, since there was nothing to look at. That makes perfect sense since angels can see spirits.
Descending from heaven upon the clouds means that the spirit of Jesus, the Christ Spirit, will be made manifest from the heaven of the will of God and will appear in the form of a human being. Though delivered from the womb of Mary, Jesus in reality descended from the heaven of the will of God. Baha’u’llah descended in like manner, from the heaven of the will of God.
You might have a point if there was any reason to believe that Jesus was going back to the shop to do more work, but there is nothing in the NT where Jesus says that he has more work to do HIMSELF and many verses that say in no uncertain terms that Hos work was finished in this world and He would never come back to this world again.
John 14:19 Yet a little while, and the world seeth me no more; but ye see me: because I live, ye shall live also.
John 17:11 And now I am no more in the world, but these are in the world, and I come to thee. Holy Father, keep through thine own name those whom thou hast given me, that they may be one, as we are.
John 17:4 I have glorified thee on the earth: I have finished the work which thou gavest me to do.
John 19:30 When Jesus therefore had received the vinegar, he said, It is finished: and he bowed his head, and gave up the ghost.