That's one of the primary purposes of "the time of Jacob's trouble"... to turn them into God's people (they will come to faith within/during the 7-yr trib/70th Wk, AFTER our Rapture). This is what "the birth PANGS" [aka the SEALS] are slated for, etc...
Romans 9:26 [re: Israel (whereas v.25 is about the Gentiles/Hos2:23b)] -
"And it shall come to pass,
that in the place where it was said unto them [Israel], Ye
are not my people; there shall they be called the children of the living God."
Hosea 1:10 [bsb] -
"Yet the number of the Israelites will be like the sand of the sea, which cannot be measured or counted. And it will happen that in the very place where it was said to them, ‘You are not My people,’ they will be called ‘sons of the living God.’"
The Olivet Discourse is
not covering the Subject of our Rapture, but rather the promised and prophesied earthly Millennial Kingdom (and the specific limited time period which leads UP TO that) which will commence upon His "RETURN" to the earth [Lk12:36-37-38,40,42-44 "when he will
RETURN FROM the wedding..." (that is, as an "
already-wed Bridegroom"

)
THEN the meal; i.e. the
earthly MK]
Most of the parables Jesus gave speak of Israel and their future (at least, a great many of them do)