Here is what a Rhabi says "1 - Yes, one can convert to Judaism.
2 - Indeed, Jews believe that God has chosen the Jewish people - and assigned to them specific tasks in order to bring blessing to the world (and we’ve come a long way in the past three to four thousand years). For anyone who doubts that, see Deuteronomy 7:6–9, and note that the daily Jewish prayers include a blessing that concludes “Blessed are You, transcendental God, Who has chosen His people Israel lovingly.”
3 - The above lead to the conclusion that, indeed, one can choose to be a member of the chosen people (by taking on their covenant with God, which includes the above-mentioned long-range and short-range goals of bringing assorted blessings to all peoples on earth).
Thus, that means that in order to become a member of the chosen people you MUST REJECT JESUS. Hoe messed up is it that Christians agree that this makes yiu a chosen person
Here's my question for Evangelical Christians. Is Ivanka Trump a chosen person, now that she rejected Christ?