The Jews who do not accept Jesus as Messiah are the same as gentiles who do not accept Jesus. During the tribulation, the Jews will realize that Jesus is, indeed, the Messiah.
The things we Christians 2000 years later forget are
1. Many Jews DID become Jesus followers — for the first century, indeed until 136 AD, “Christianity” was a sect of 2nd temple Judaism.
2. The other sects of 2nd temple Judaism were the Sadducees (only holding to the written Torah and the prophets), the Samaritans (well, Israelites - who only held to the Torah), the Essenes who rejected the temple worship, the Pharisees who had an Oral Torah as well as the Written.
3. The Jesus movement was a real threat to the Sadduccees and Pharisees, which is why they persecuted this “heresy”.
4. But the Jesus-movement was vindicated when the prophecy Jesus made about the destruction of the temple and His return (refer Josephus) came true in 70 AD. AND all the Jesus followers fled to hills (Pellas village) and none died in the destruction of Jerusalem.
5. The book of Revelation of the Apocalypse of St. John of Patmos was written BEFORE 67 AD - as indicated in chapters 1 and 2 talking about the listeners facing a tribulation. It was written BEFORE the Gospel of John (which dates to circa 80 AD)
6. The Jesus-movement faced its great tribulation for 1260 days / 3.5 years / 42 months from 64 AD to 67 AD when not only did the temple authorities AND the Pharisees persecute them, but Nero’s blaming of them for the burning of Rome led to the secular authorities also targeting them.
7. They survived and pointed to the destruction of the temple as the proof of their God’s truth. THAT is why they got tons and tons of new adherents — think of it, otherwise they were fools worshiping a God who was executed like a criminal and didn’t come back.