That was not about the Rapture of the Church.
Jesus was speaking to Jews, teaching as a rabbi would.
He was not speaking to the Church.
For being a new creation in Christ would not happen until after he was resurrected, ascended, and glorified!
So?
Just before the Millennium starts?
After the Tribulation just ended?
All unbelieving Jews must be removed from the earth.
In that way? His reign in Jerusalem on the throne of David will be for only believing Jews.
I remember when I was first shown that.
I was gloriously dumbfounded!
Paul was to reveal the mystery of the Rapture to the church. Not Jesus!
For this reason I, Paul, the prisoner of Christ Jesus for the sake of you Gentiles—
Surely you have heard about the administration of God’s grace that was given to me for you,
that is, the mystery made known to me by revelation, as I have already written briefly.
In reading this, then, you will be able to understand my insight into the mystery of Christ,
which was not made known to people in other generations, as it has now been revealed by
the Spirit to God’s holy apostles and prophets."
Ephesians 3:1-5