I know what Jesus said about false prophets, but just because Jesus warned of false prophets that does not mean that there would not be any true prophets. Moreover, when asked by the disciples, Jesus never said He was going to return. Jesus only said not to be deceived by men who would come claiming to be Christ because many men have some claiming that.
Matthew 24 KJV
3 And as he sat upon the mount of Olives, the disciples came unto him privately, saying, Tell us, when shall these things be? and what shall be the sign of thy coming, and of the end of the world?
4 And Jesus answered and said unto them, Take heed that no man deceive you.
5 For many shall come in my name, saying, I am Christ; and shall deceive many.
I know those verses and I have my own interpretation. I do not believe that Jesus ever said He would descend from a cloud in the sky.
Acts 1:10-11 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.
The disciples were staring up into the sky. The two men dressed in white (angels) came along and asked why they were staring up into the sky. The two men then wondered why the disciples were staring up into the sky and said that the same Jesus who was taken up to heaven will return as he went to heaven. It does not say that the disciple saw a body go up.
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 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 who had the Christ Spirit. Though delivered from the womb of Mary, the soul of Jesus that has always existed descended from heaven, by the will of God.