【Revelation 12:5】She gave birth to a son, a male child, who will rule all the nations with an iron scepter. And her child was snatched up to God and to his throne.
The above passages fully demonstrate that Christ will come back in the flesh.
At the first coming, Christ came as the Son of Man in the flesh.At the second coming, He is coming as the Son of Man in the flesh too.But the flesh of His second coming and His first coming are different.