Evidently, when Jesus comes back He will come back in the same way that He left.
That is, He will be coming back literally and personally, not figuratively or spiritually.
Notice the visual words: watched, looked, behold, gazing and saw.
Just like those apostles, we will be able to look up into heaven and actually see Him come back to this earth.
Also, it will be this “same” Jesus who returns.
Not a ghost or spirit, but in bodily form, just as He left.