Really.
When Jesus started his earthly ministry, it was already too late.
Luke 19:42and said, "If you, even you, had only known on this day what would bring you peace--but now it is hidden from your eyes.
The Jews who did not have faith were cut off and hardened by God so that they could not hear Jesus and repent. JESUS CAME FIRST FOR THOSE WHO ALREADY BELONGED TO GOD BY FAITH.
Mark 4:12so that, "'they may be ever seeing but never perceiving, and ever hearing but never understanding; otherwise they might turn and be forgiven!'"
Luke 19:41As he approached Jerusalem and saw the city, he wept over it
John 12:40"He has blinded their eyes and hardened their hearts, so they can neither see with their eyes, nor understand with their hearts, nor turn--and I would heal them."
Romans 11:8as it is written: "God gave them a spirit of stupor, eyes that could not see and ears that could not hear, to this very day."
Romans 11:7What then? What the people of Israel sought so earnestly they did not obtain. The elect among them did, but the others were hardened,
This scripture SAYS they were broken off; broken off is cut off.
Romans 11:20Granted. But they were broken off because of unbelief, and you stand by faith. Do not be arrogant, but tremble.